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Filmography by TV series for
Len Janson More at IMDbPro »

"Gadget and the Gadgetinis" (1 episode)
  1. Face to Face to Face (2 September 2003) - Writer (writer) 
"High Tide" (1 episode)
  1. Open House (3 February 1997) - producer 
"Sonic the Hedgehog" (26 episodes)
... aka Sonic SatAM (USA: informal title)
  1. Sonic Boom (18 September 1993) - Writer (written by), story editor, supervising producer 
  2. Sonic and Sally (25 September 1993) - story editor, supervising producer 
  3. Ultra Sonic (2 October 1993) - story editor, supervising producer 
  4. Sonic and the Secret Scrolls (9 October 1993) - story editor, supervising producer 
  5. Super Sonic (16 October 1993) - story editor, supervising producer 
  6. Sonic Racer (23 October 1993) - Writer (written by), story editor, supervising producer 
  7. Harmonic Sonic (30 October 1993) - story editor, supervising producer 
  8. Hooked on Sonics (6 November 1993) - story editor, supervising producer 
  9. Sonic's Nightmare (13 November 1993) - story editor, supervising producer 
  10. Warp Sonic (20 November 1993) - story editor, supervising producer 
  11. Sub-Sonic (27 November 1993) - story editor, supervising producer 
  12. Sonic Past Cool (4 December 1993) - story editor, supervising producer 
  13. Heads or Tails (11 December 1993) - Writer (written by), story editor, supervising producer 
  14. Sonic Conversion (10 September 1994) - story editor, supervising producer 
  15. Game Guy (17 September 1994) - story editor, supervising producer 
  16. No Brainer (24 September 1994) - story editor, supervising producer 
  17. Blast to the Past: Part 1 (1 October 1994) - story editor, supervising producer 
  18. Blast to the Past: Part 2 (8 October 1994) - story editor, supervising producer 
  19. Fed Up with Antoine/Ghost Busted (15 October 1994) - Writer (written by) (segment "Fed Up with Antoine"), story editor, supervising producer 
  20. Dulcy (22 October 1994) - story editor, supervising producer 
  21. The Void (29 October 1994) - story editor, supervising producer 
  22. The Odd Couple/Ro-Becca (5 November 1994) - Writer (written by) (segment "The Odd Couple"), story editor, supervising producer 
  23. Cry of the Wolf (12 November 1994) - story editor, supervising producer 
  24. Drood Henge (19 November 1994) - story editor, supervising producer 
  25. Spyhog (26 November 1994) - story editor, supervising producer 
  26. The Doomsday Project (3 December 1994) - story editor, supervising producer 
"Land of the Lost" (8 episodes)
  1. Tasha (7 September 1991) - Writer (writer), producer 
  2. Something's Watching (14 September 1991) - Writer (writer), producer 
  3. Jungle Girl (28 September 1991) - Writer (writer), producer 
  4. Kevin vs. the Volcano (26 October 1991) - producer 
  5. Flight to Freedom (9 November 1991) - Writer (writer), producer 
  6. The Thief (23 November 1991) - producer 
  7. Power Play (7 December 1991) - Writer (writer), producer 
  8. The Sorceress (12 September 1992) - Writer (writer), producer 
"The Wizard of Oz" (7 episodes)
  1. Crystal Clear (29 September 1990) - story editor 
  2. We're Not in Kansas Anymore (6 October 1990) - story editor 
  3. The Lion That Squeaked (13 October 1990) - story editor 
  4. A Star Is Gone (27 October 1990) - story editor 
  5. Time Town (3 November 1990) - story editor 
  6. Upside-Down Town (17 November 1990) - story editor 
  7. The Day the Music Died (24 November 1990) - story editor 
"Tiny Toon Adventures" (2 episodes)
... aka Steven Spielberg Presents... Tiny Toon Adventures (USA: alternative title)
  1. The Buster Bunny Bunch (20 September 1990) - Writer (writer) (segment "Squish") (as Len Jansen) 
  2. Stuff That Goes Bump in the Night (25 September 1990) - story editor 
"ABC Weekend Specials" (2 episodes)
  1. P.J. Funnybunny (4 February 1989) - Writer (writer), executive producer 
  2. P.J.'s Unfunnybunny Christmas (31 December 1994) - Writer (writer) 
"Slimer! And the Real Ghostbusters" (3 episodes)
  1. A Mouse in the House (24 September 1988) - Writer (writer) 
  2. The Not-So-Great Outdoors (17 December 1988) - Writer (writer) 
  3. Out with Grout (25 March 1989) - Writer (writer) 
"Adderly" (1 episode)
  1. A Change of Mind (15 October 1986) - Writer (writer) 
"The Real Ghost Busters" (21 episodes)
  1. Ghosts R Us (13 September 1986) - Writer (writer) 
  2. Killerwatt (20 September 1986) - Writer (writer) 
  3. Mrs. Rogers Neighborhood (27 September 1986) - Writer (writer) 
  4. Janine's Genie (6 December 1986) - Writer (writer) 
  5. Baby Spookums (12 September 1987) - Writer (writer) 
  6. It's a Jungle Out There (19 September 1987) - Writer (writer) 
  7. Once Upon a Slime (10 October 1987) - Writer (writer) 
  8. Big Trouble with Little Slimer (21 November 1987) - Writer (writer) 
  9. The Joke's on Ray (10 September 1988) - Writer (writer) 
  10. Short Stuff (22 October 1988) - Writer (story) 
  11. Follow That Hearse (12 November 1988) - Writer (writer) 
  12. Something's Going Around (9 September 1989) - Writer (writer) 
  13. Partners in Slime (7 October 1989) - story editor, supervising producer 
  14. Jailbusters (21 October 1989) - Writer (writer) 
  15. Transcendental Tourists (18 November 1989) - Writer (writer) 
  16. Trading Faces (18 November 1989) - Writer (writer) 
  17. It's About Time (9 December 1989) - Writer (writer) 
  18. Ghostworld (22 September 1990) - Writer (writer) 
  19. Spacebusters (13 October 1990) - Writer (writer) 
  20. Stay Tooned (1 December 1990) - Writer (writer) 
  21. Not Now, Slimer! (21 September 1991) - Writer (writer) 
"Benji, Zax & the Alien Prince" (4 episodes)
  1. The Prince and the Bag Lady (17 September 1983) - Writer (developer) (writer), story editor 
  2. The Day of the Hunter (1 October 1983) - Writer (writer), story editor 
  3. Gold Mine (8 October 1983) - Writer (writer), story editor 
  4. Puppy Love (5 November 1983) - Writer (developer) 
"Smurfs" (62 episodes)
... aka Smurfs' Adventures
  1. Jokey's Medicine/Vanity Fare (12 September 1981) - Writer (story), story editor 
  2. The Astrosmurf (12 September 1981) - Writer (adaptation) (story), story editor 
  3. The Magical Meanie/Sorcerer Smurf (19 September 1981) - Writer (story), story editor 
  4. St. Smurf and the Dragon (19 September 1981) - Writer (story), story editor 
  5. Bewitched, Bothered and Be-Smurfed (26 September 1981) - Writer (story), story editor 
  6. King Smurf/The Smurfs and the Howlibird (26 September 1981) - Writer (story), story editor 
  7. Soup a La Smurf (3 October 1981) - Writer (story), story editor 
  8. All That Glitters Isn't Smurf/Dreamy's Nightmare (3 October 1981) - Writer (story), story editor 
  9. The Magic Egg/Smurphony in 'C' (10 October 1981) - Writer (story), story editor 
  10. Romeo and Smurfette (10 October 1981) - Writer (story), story editor 
  11. Sideshow Smurfs (17 October 1981) - Writer (story), story editor 
  12. Supersmurf/Paradise Smurfed (17 October 1981) - Writer (story) (segment "Supersmurf"), story editor 
  13. Sir Hefty (24 October 1981) - Writer (story), story editor 
  14. The Baby Smurf/The Fake Smurf (24 October 1981) - Writer (story), story editor 
  15. Haunted Smurfs/The Purple Smurfs (31 October 1981) - Writer (story), story editor 
  16. Painter and Poet (31 October 1981) - Writer (story), story editor 
  17. The Magnifying Mixture/Foul Weather Smurf (7 November 1981) - Writer (story), story editor 
  18. The Fountain of Smurf (7 November 1981) - Writer (story), story editor 
  19. The Hundredth Smurf (14 November 1981) - Writer (story), story editor 
  20. The Abominable Snowbeast/Gargamel, the Generous (14 November 1981) - Writer (story), story editor 
  21. Now You Smurf 'Em, Now You Don't/Spelunking Smurfs (21 November 1981) - Writer (story), story editor 
  22. The Smurfette (21 November 1981) - Writer (story), story editor 
  23. The Smurf's Apprentice/Smurf-Colored Glasses (28 November 1981) - Writer (story) (segment "The Smurf's Apprentice"), story editor 
  24. The Clockwork Smurf (28 November 1981) - Writer (story), story editor 
  25. Fuzzle Trouble/Smurfette's Dancing Shoes (5 December 1981) - Writer (story), story editor 
  26. The Smurfs and the Money Tree (5 December 1981) - Writer (story), story editor 
  27. The Smurf Who Couldn't Say No (18 September 1982) - story editor 
  28. The Adventures of Robin Smurf (18 September 1982) - story editor 
  29. The Cursed Country (18 September 1982) - story editor 
  30. The Black Hellebore (25 September 1982) - story editor 
  31. S-Shivering S-Smurfs/Sister Smurf (25 September 1982) - story editor 
  32. Revenge of the Smurfs (25 September 1982) - story editor 
  33. The Sorcery of Maltrochu (2 October 1982) - story editor 
  34. The Three Smurfketeers (2 October 1982) - story editor 
  35. Heavenly Smurfs/It Came from Outer Smurf (2 October 1982) - story editor 
  36. Squeaky/The Kaplowey Scroll (9 October 1982) - story editor 
  37. Gormandizing Greedy/Waste Not, Smurf Not (9 October 1982) - story editor 
  38. The Goblin of Boulder Wood (9 October 1982) - story editor 
  39. Johan's Army (16 October 1982) - story editor 
  40. The Lost City of Yore (16 October 1982) - story editor 
  41. The Magic Fountain (16 October 1982) - story editor 
  42. For the Love of Gargamel/The A-Maze-ing Smurfs (23 October 1982) - story editor 
  43. The Impostor King (23 October 1982) - story editor 
  44. The Haunted Castle (23 October 1982) - story editor 
  45. The Blue Plague/The Last Laugh (30 October 1982) - story editor 
  46. Smurfs at Sea (30 October 1982) - story editor 
  47. One Good Smurf Deserves Another (30 October 1982) - story editor 
  48. The Ring of Castellac (6 November 1982) - story editor 
  49. The Sky Is Smurfing, the Sky Is Smurfing/Turncoat Smurf (6 November 1982) - story editor 
  50. The Raven Wizard (6 November 1982) - story editor 
  51. The Return of the Clockwork Smurf (13 November 1982) - story editor 
  52. Bubble, Bubble, Smurfs in Trouble/Smurf Van Winkle (13 November 1982) - story editor 
  53. The Littlest Giant (13 November 1982) - story editor 
  54. The Prince and the Peewit (20 November 1982) - story editor 
  55. The Enchanted Baby (20 November 1982) - story editor 
  56. Clumsy Smurfs the Future (20 November 1982) - story editor 
  57. Sleepwalking Smurfs/Smurf Me No Flowers (27 November 1982) - story editor 
  58. A Mere Truffle (27 November 1982) - story editor 
  59. The Good, the Bad, and the Smurfy (27 November 1982) - story editor 
  60. The Stuff Dreams Are Smurfed Of/The Box of Dirty Tricks (4 December 1982) - story editor 
  61. All's Smurfy That Ends Smurfy (4 December 1982) - story editor 
  62. Papa's Wedding Day (4 December 1982) - story editor 
"The Flintstone Comedy Show" (1 episode)
... aka Bedrock Cops (USA: segment title)
... aka Captain Caveman (USA: segment title)
... aka Dino and Cavemouse (USA: segment title)
... aka Flinstones Funnies (USA: rerun title)
... aka Flintstone Frolics (Europe: English title)
... aka Pebbles, Dino and Bamm Bamm (USA: segment title)
... aka The Flintstone Family Adventures (USA: segment title)
... aka The Frankenstones (USA: segment title)
  1. RV Fever/Birthday Boy/Clownfoot/Fred Goes Ape/Flying Mouse/Ghost-sitters (20 November 1980) - Writer (story) 
"Jason of Star Command" (1 episode)
  1. Return of the Creature (2 December 1978) - Writer (written by) 
"The New Adventures of Batman" (6 episodes)
... aka The Batman/Tarzan Adventure Hour (USA: rerun title)
  1. Curses! Oiled Again! (1 January 1977) - Writer (writer) 
  2. Dead Ringers (1 January 1977) - Writer (writer) 
  3. This Looks Like a Job for Bat-Mite! (1 January 1977) - Writer (writer) 
  4. Birds of a Feather Fool Around Together (1 January 1977) - Writer (writer) 
  5. Bite-Sized (1 January 1977) - Writer (writer) 
  6. The Pest (1 January 1977) - Writer (writer) 
"Isis" (2 episodes)
... aka The Secret of Isis
  1. Now You See It... (23 October 1976) - Writer (writer) 
  2. ...And Now You Don't (23 October 1976) - Writer (writer) 
"Ark II" (3 episodes)
  1. The Robot (2 October 1976) - Writer (writer) 
  2. Robin Hood (6 November 1976) - Writer (writer) 
  3. Don Quixote (11 December 1976) - Writer (writer) 
"Tarzan, Lord of the Jungle" (24 episodes)
  1. Tarzan and the City of Gold (11 September 1976) - Writer (writer), associate producer 
  2. Tarzan and the Vikings (18 September 1976) - Writer (writer), associate producer 
  3. Tarzan and the Golden Lion (25 September 1976) - Writer (writer), associate producer 
  4. Tarzan and the Forbidden City (2 October 1976) - Writer (writer), associate producer 
  5. Tarzan and the Graveyard of the Elephants (9 October 1976) - Writer (writer), associate producer 
  6. Tarzan's Return to the City of Gold (16 October 1976) - Writer (writer), associate producer 
  7. Tarzan and the Strange Visitors (23 October 1976) - Writer (writer), associate producer 
  8. Tarzan and the Land of the Giants (30 October 1976) - Writer (writer), associate producer 
  9. Tarzan and the Knights of Nimmr (6 November 1976) - Writer (writer), associate producer 
  10. Tarzan's Rival (13 November 1976) - Writer (writer), associate producer 
  11. Tarzan and the City of Sorcery (20 November 1976) - Writer (writer), associate producer 
  12. Tarzan at the Earth's Core (27 November 1976) - Writer (writer), associate producer 
  13. Tarzan and the Ice Creature (4 December 1976) - Writer (writer), associate producer 
  14. Tarzan and the Olympiads (11 December 1976) - Writer (writer), associate producer 
  15. Tarzan, the Hated (18 December 1976) - Writer (writer), associate producer 
  16. Tarzan's Trial (18 December 1976) - Writer (writer), associate producer 
  17. Tarzan and the Sunken City of Atlantis (10 September 1977) - Writer (writer) 
  18. Tarzan and the Bird People (17 September 1977) - Writer (writer) 
  19. Tarzan and the Colossus of Zome (24 September 1977) - Writer (writer) 
  20. Tarzan and the Beast in the Iron Mask (1 October 1977) - Writer (writer) 
  21. Tarzan and the Amazon Princess (8 October 1977) - Writer (writer) 
  22. Tarzan and the Conquistadors (15 October 1977) - Writer (writer) 
  23. Tarzan and the Space God (16 September 1978) - Writer (writer) 
  24. Tarzan and the Island of Dr. Morphos (14 October 1978) - Writer (teleplay) 
"Shazam!" (16 episodes)
  1. The Joyriders (7 September 1974) - associate producer 
  2. The Brothers (14 September 1974) - associate producer 
  3. Thou Shalt Not Kill (21 September 1974) - associate producer 
  4. The Lure of the Lost (28 September 1974) - associate producer 
  5. The Road Back (5 October 1974) - associate producer 
  6. The Athlete (12 October 1974) - associate producer 
  7. The Treasure (19 October 1974) - associate producer 
  8. The Boy Who Said 'No' (24 October 1974) - associate producer 
  9. The Doom Buggy (2 November 1974) - associate producer 
  10. The Brain (9 November 1974) - associate producer 
  11. Little Boy Lost (16 November 1974) - associate producer 
  12. The Delinquent (23 November 1974) - associate producer 
  13. The Braggart (30 November 1974) - associate producer 
  14. The Past Is Not Forever (7 December 1974) - associate producer 
  15. The Gang's All Here (14 December 1974) - associate producer 
  16. Sound of a Different Drummer (8 October 1976) - Writer (writer) 
"Star Trek" (2 episodes)
... aka Star Trek: TAS (USA: promotional abbreviation)
... aka Star Trek: The Animated Adventures (USA: alternative title)
... aka Star Trek: The Animated Series
... aka Star Trek: The Animated Series-The Animated Adventures of Gene Roddenberry's Star Trek (USA: DVD box title)
... aka The Animated Adventures of Gene Roddenberry's Star Trek (USA: video box title)
  1. Once Upon a Planet (3 November 1973) - Writer (writer) 
  2. The Practical Joker (21 September 1974) - Writer (writer) 
"The ABC Saturday Superstar Movie" (1 episode)
... aka The New Saturday Superstar Movie (USA: second season title)
  1. Daffy Duck and Porky Pig Meet the Groovie Goolies (16 December 1972) - Writer (writer), Actor (uncredited) 
"Will the Real Jerry Lewis Please Sit Down" (1 episode)
  1. Computer Suitor (12 September 1970) - Writer (written by) 
"Kissyfur" (3 episodes)
  1. Home Sweat Home (????) - Writer (by) 
  2. Bear Roots (22 December 1985) - Writer (writer) (as Len Jansen) 
  3. The Birds and the Bears (30 March 1986) - Writer (writer)