Lists by GusF
Of these 86 series, only 19 have 100 or more episodes and only three of those ("Stargate SG-1", "Law & Order" and "Smallville") have 200 or more episodes, which shows that I do have something resembling a life!
John Sturges is the only person to direct two of them: "The Magnificent Seven" and "The Great Escape".
Richard Attenborough is the only actor to appear in three of them: "The Great Escape", "Hamlet" and "A Matter of Life and Death".
Twelve other actors appeared in two of them: Norman Alden ("Back to the Future", "Ed Wood"), Marc McClure ("Back to the Future", "Superman"), Steve McQueen ("The Magnificent Seven", "The Great Escape"), James Coburn ("The Magnificent Seven", "The Great Escape"), Charles Bronson ("The Magnificent Seven", "The Great Escape"), William Russell ("The Great Escape", "Superman"), Kim Hunter ("Planet of the Apes", "A Matter of Life and Death"), Charlton Heston ("Planet of the Apes", "Hamlet"), Whit Bissell ("The Magnificent Seven", "The Time Machine"), George Voskovec ("12 Angry Men", "Somewhere in Time"), Christopher Reeve ("Somewhere in Time", "Superman"), Christopher Lee ("The Lord of the Rings: The Return of the King", "The Wicker Man") and Leslie Nielsen ("Airplane!", "Forbidden Planet").
The list is probably not exhaustive but it includes all of them that I could find.
The most films in which he appeared in any year was 11 in 1970.
"The Lord of the Ring: The Return of the King" has the most prequels of any Best Picture winner at three: "The Hobbit: An Unexpected Journey", "The Hobbit: The Desolation of Smaug" and "The Hobbit: The Battle of the Five Armies".
Talia Shire has appeared in six Best Picture winner sequels, more than anyone else: "The Godfather: Part II", "Rocky II", "Rocky III", "Rocky IV", "Rocky V" and "The Godfather: Part III".
I'm not including adaptations with a modern setting which retain Shakespeare's language (such as Baz Luhrmann's "Romeo + Juliet"), ones about William Shakespeare as a person (such as "Shakespeare in Love") or ones which depict characters in the film performing one of his plays (such as "In the Bleak Midwinter").
The studio did not release any films from 1937 to 1946, in 1975, from 1977 to 1978, from 1980 to 2007, in 2009 or in 2013.
The most films that Hammer released in any year was nine in both 1954 and 1959 while it released only one film in 1947, 1976, 1979, 2008, 2011 and 2012.
Tom Baker (possibly!), Peter Davison, Paul McGann, the late Elisabeth Sladen and John Leeson are the only actors to play the same character in both series.
Rumour has it that Peter Capaldi was considered for the Eighth Doctor in the 1996 TV Movie and he was definitely considered for the Eleventh Doctor while David Tennant was considered for the Ninth Doctor but I'm not including either of them since they both eventually became the Doctor.
Some would have been great, some would have been bad and some would have been so bad, they would have been good.
I'm not including actors who were considered for the role but not cast until a later time. Roger Moore, Timothy Dalton and Pierce Brosnan all fall into that category.
Richard Dean Anderson and Michael Shanks are the only actors to appear in the pilots of all three series.