Filmography by rating for
Leonard 'Lenny' Kosnowski (Character)
from "Happy Days" (1974)

"Happy Days: Fonzie's Funeral: Part 2 (#6.23)" (1979)
"Laverne & Shirley: Squiggy in Love (#4.20)" (1979)
"Laverne & Shirley: Not Quite South of the Border (#5.14)" (1980)
"Laverne & Shirley: Dinner for Four (#4.12)" (1978)
"Laverne & Shirley: Call Me a Taxi (#2.15)" (1977)
"Laverne & Shirley: The Society Party (#1.1)" (1976)
"Laverne & Shirley: Shirley and the Older Man (#4.24)" (1979)
"Laverne & Shirley: Laverne and Shirley Move In (#4.11)" (1978)
"Laverne & Shirley: A Visit to the Cemetery (#4.9)" (1978)
"Laverne & Shirley: The Bully Show (#4.8)" (1978)
"Laverne & Shirley: A Date with Eraserhead (#4.7)" (1978)
"Laverne & Shirley: Festival: Part 1 (#4.1)" (1978)
"Laverne & Shirley: The Slow Child (#3.15)" (1978)
"Laverne & Shirley: Cruise: Part 1 (#3.6)" (1977)
"Laverne & Shirley: Laverne's Arranged Marriage (#3.5)" (1977)
"Laverne & Shirley: The Pact (#3.3)" (1977)
"Laverne & Shirley: Hi Neighbor, Book 2 (#2.19)" (1977)
"Laverne & Shirley: Playing Hooky (#2.13)" (1977)
"Laverne & Shirley: Two of Our Weirdos Are Missing (#2.9)" (1976)
"Laverne & Shirley: Dear Future Model (#2.7)" (1976)
"Laverne & Shirley: A Nun's Story (#1.4)" (1976)
"Laverne & Shirley: Festival: Part 2 (#4.2)" (1978)
"Laverne & Shirley: The Horse Show (#3.14)" (1978)
"Laverne & Shirley: Shirley's Operation (#3.10)" (1977)
"Laverne & Shirley: Steppin' Out (#2.16)" (1977)
"Laverne & Shirley: The Bridal Shower (#2.5)" (1976)
"Laverne & Shirley: Dog Day Blind Dates (#1.6)" (1976)
"Laverne & Shirley: The Bachelor Party (#1.2)" (1976)
"Laverne & Shirley: The Beatnik Show (#5.16)" (1980)
"Laverne & Shirley: Fire Show (#4.19)" (1979)
"Laverne & Shirley: The Stakeout (#3.9)" (1977)
"Laverne & Shirley: Guilty Until Proven Not Innocent (#2.11)" (1977)
"Laverne & Shirley: Look Before You Leap (#2.6)" (1976)
"Laverne & Shirley: Falter at the Alter (#1.5)" (1976)
"Laverne & Shirley: Bowling for Razzberries (#1.3)" (1976)
"Laverne & Shirley: Studio City (#6.3)" (1980)
"Laverne & Shirley: What Do You Do with a Drunken Sailor? (#5.5)" (1979)
"Laverne & Shirley: The Third Annual Shotz Talent Show (#4.16)" (1979)
"Laverne & Shirley: Who's Papa? (#4.15)" (1979)
"Laverne & Shirley: Bus Stop (#3.18)" (1978)
"Laverne & Shirley: New Year's Eve 1960 (#3.12)" (1977)
"Laverne & Shirley: Citizen Krane (#2.23)" (1977)
"Laverne & Shirley: Frank's Fling (#2.20)" (1977)
"Laverne & Shirley: Anniversary Show (#2.12)" (1977)
"Laverne & Shirley: Angels of Mercy (#2.2)" (1976)
"Laverne & Shirley: It's the Water (#1.10)" (1976)
"Laverne & Shirley: Candy Is Dandy (#6.5)" (1980)
"Laverne & Shirley: Bad Girls (#5.8)" (1979)
"Laverne & Shirley: The Second Almost Annual Shotz Talent Show (#3.16)" (1978)
"Laverne & Shirley: Honeymoon Hotel (#2.18)" (1977)
"Laverne & Shirley: Guinea Pigs (#2.14)" (1977)
"Laverne & Shirley: Once Upon a Rumor (#1.7)" (1976)
"Laverne & Shirley: Antonio, the Amazing (#5.24)" (1980)
"Laverne & Shirley: The Duke of Squigman (#5.23)" (1980)
"Laverne & Shirley: You Oughta Be in Pictures (#5.15)" (1980)
"Laverne & Shirley: Take Two, They're Small (#5.11)" (1979)
"Laverne & Shirley: Shotgun Wedding: Part 2 (#5.1)" (1979)
"Laverne & Shirley: There's a Spy in My Beer (#4.23)" (1979)
"Laverne & Shirley: Bachelor Mothers (#2.3)" (1976)
"Laverne & Shirley: Drive! She Said (#2.1)" (1976)
"Laverne & Shirley: The Fourth Annual Shotz Talent Show (#5.12)" (1979)
"Laverne & Shirley: Fat City Holiday (#5.3)" (1979)
"Laverne & Shirley: Take My Plants, Please (#3.11)" (1977)
"Laverne & Shirley: Dating Slump (#1.9)" (1976)
"Laverne & Shirley: Not Quite New York (#6.1)" (1980)
"Laverne & Shirley: O Come All Ye Bums (#4.14)" (1978)
"Laverne & Shirley: Breaking Up and Making Up: Edna & Frank (#3.24)" (1978)
"Laverne & Shirley: The Dance Studio (#3.23)" (1978)
"Laverne & Shirley: Airport '59 (#3.1)" (1977)
"Laverne & Shirley: Buddy Can You Spare a Father? (#2.17)" (1977)
"Laverne & Shirley: Oh Hear the Angels' Voices (#2.10)" (1976)
"Laverne & Shirley: Moving In (#7.8)" (1981)
"Laverne & Shirley: Malibu Mansion (#6.11)" (1981)
"Laverne & Shirley: Separate Tables (#5.26)" (1980)
"Laverne & Shirley: It's a Dog's Life (#4.13)" (1978)
"Laverne & Shirley: Chorus Line (#4.10)" (1978)
"Laverne & Shirley: Mother Knows Worst (#1.15)" (1976)
"Laverne & Shirley: From Suds to Stardom (#1.14)" (1976)
"Laverne & Shirley: Hi, Neighbor (#1.12)" (1976)
"Laverne & Shirley: Fakeout at the Stakeout (#1.11)" (1976)
"Laverne & Shirley: The Dating Game (#6.6)" (1980)
"Laverne & Shirley: Murder on the Moose Jaw Express: Part 1 (#5.20)" (1980)
"Laverne & Shirley: Feminine Mistake (#4.21)" (1979)
"Laverne & Shirley: The Quiz Show (#4.5)" (1978)
"Laverne & Shirley: The Robot Lawsuit (#3.4)" (1977)
"Laverne & Shirley: The Obstacle Course (#3.20)" (1978)
"Laverne & Shirley: Haunted House (#2.21)" (1977)
"Laverne & Shirley: How Do You Say 'Are You Dead' in German? (#1.13)" (1976)
"Laverne & Shirley: One Flew Over Milwaukee (#1.8)" (1976)
"Laverne & Shirley: Love Out the Window (#6.10)" (1981)
"Laverne & Shirley: We're in the Army, Now: Part 1 (#5.9)" (1979)
"Laverne & Shirley: Supermarket Sweep (#4.17)" (1979)
"Laverne & Shirley: Laverne & Shirley Meet Fabian (#3.8)" (1977)
Entertainment Tonight Presents: Laverne and Shirley Together Again (2002) (TV)
"Laverne & Shirley: Lonely at the Middle (#2.22)" (1977)
"Laverne & Shirley: Out, Out Damn Plout (#6.19)" (1981)
"Laverne & Shirley: We're in the Army, Now: Part 2 (#5.10)" (1979)
"Laverne & Shirley: 2001: A Comedy Odyssey (#3.22)" (1978)
"Laverne & Shirley: Cruise: Part 2 (#3.7)" (1977)
"Laverne & Shirley: Tag Team Wrestling (#3.2)" (1977)
"Laverne & Shirley: Good Time Girls (#2.8)" (1976)
"Laverne & Shirley: The Dentist (#3.17)" (1978)
"Laverne & Shirley: The Ghost Story (#8.17)" (1983)
"Laverne & Shirley: Why Did the Fireman... (#5.18)" (1980)
"Laverne & Shirley: The Robbery (#4.4)" (1978)
"Laverne & Shirley: Playing the Roxy (#4.3)" (1978)
"Laverne & Shirley: Welcome to Burbank (#6.2)" (1980)
"Laverne & Shirley: Murder on the Moose Jaw Express: Part 2 (#5.21)" (1980)
"Laverne & Shirley: The Diner (#5.25)" (1980)
"Laverne & Shirley: To Tell the Truth (#6.12)" (1981)