Question: Silent Movie is a 1976 American satirical comedy film co-written, directed by, and starring an American actor, writer, producer, director, comedian, and composer who began his career as a comic and writer for what early TV variety show?

Context articles: Silent Movie
Will Success Spoil Rock Hunter?
Used Cars
The Comebacks
Carol Burnett
High Anxiety
Extreme Movie
The Cheap Detective
Mel Brooks
Not Another B Movie

Silent Movie is a 1976 American satirical comedy film co-written, directed by, and starring Mel Brooks, and released by 20th Century Fox on June 17, 1976.
 The ensemble cast includes Dom DeLuise, Marty Feldman, Bernadette Peters, and Sid Caesar, with appearances by Anne Bancroft, Liza Minnelli, Burt Reynolds, James Caan, Marcel Marceau, and Paul Newman playing themselves.
 While indeed silent (except for one word, music, and numerous sound effects), the film is a parody of the silent film genre, particularly the slapstick comedies of Charlie Chaplin, Mack Sennett, and Buster Keaton.
 Among the film's most famous gags is the fact that the only audible word in the film is spoken by Marcel Marceau, a noted mime.
 Sound is a big factor in the film's humor, as when a scene that shows the New York City skyline begins with the song "San Francisco", only to have it come to a sudden stop as if the musicians realize they are playing the wrong music.
 They then go into "I'll Take Manhattan" instead.
 A play on the current trend of large corporations buying up film studios is parodied by the attempt of the "Engulf and Devour Corporation" to take control of a studio (a thinly veiled reference to Gulf+Western's takeover of Paramount Pictures).
Will Success Spoil Rock Hunter?
 is a 1957 American satirical comedy film starring Jayne Mansfield and Tony Randall, with Betsy Drake, Joan Blondell, John Williams, Henry Jones, Lili Gentle, and Mickey Hargitay, and a cameo by Groucho Marx.
 The film is a satire on popular fan culture, Hollywood hype, and the advertising industry, which was making millions of dollars off the growing revenue from television ads.
 It also takes aim at television and the reduction it caused to the size of movie theater audiences in the 1950s.
 The film was also known as "Oh!
 For a Man!"
 in the United Kingdom.
Used Cars is a 1980 American satirical comedy film, co-written by Robert Zemeckis and Bob Gale, and directed by Zemeckis.
 Rudy Russo (Kurt Russell) is a devious car salesman working for affable but monumentally unsuccessful used car dealer Luke Fuchs (Jack Warden).
 Luke's principal rival, located directly across the street, is his more prosperous brother, Roy L. Fuchs (also played by Warden), who is scheming to take over Luke's lot.
 The film also stars Deborah Harmon and Gerrit Graham, and the supporting cast includes Frank McRae, David L. Lander, Michael McKean, Al Lewis, Dub Taylor, Harry Northup, Dick Miller, and Sarah Wills.
The Comebacks is a 2007 American satirical comedy film directed by Tom Brady (film director).
 This film is a parody of the clichés and plots of the sports film genre.
 In the UK, Greece, Finland, Australia and New Zealand this film is called Sports Movie.
 The movie was released into theaters on October 19, 2007.
Carol Creighton Burnett (born April 26, 1933) is an American actress, comedienne, singer and writer, whose career spans six decades of television.
 She is best known for her long-running TV variety show, "The Carol Burnett Show", originally aired on CBS.
 She has achieved success on stage, television and film in varying genres including dramatic and comedy roles.
 She also has appeared on various talk shows and as a panelist on game shows.
High Anxiety is a 1977 American satirical comedy film produced and directed by Mel Brooks, who also plays the lead.
 This is Brooks' first film as a producer and first speaking lead role (his first lead role was in "Silent Movie").
 Veteran Brooks ensemble members Harvey Korman, Cloris Leachman, and Madeline Kahn are also featured.
Extreme Movie (formerly Parental Guidance Suggested; known as Hotdogs & Doughnuts: An Extreme Movie in Australia) is a 2008 American satirical comedy film composed of sketches focusing on teen sex.
 Adam Jay Epstein and Andrew Jacobson direct, with segments co-written by "Saturday Night Live" performers Will Forte, Andy Samberg, and writers Akiva Schaffer, Jorma Taccone, Phil Lord and Christopher Miller.
 The ensemble cast includes Frankie Muniz, Ryan Pinkston, Jamie Kennedy, Danneel Harris, Andy Milonakis, Matthew Lillard, Rob Pinkston and Michael Cera.
The Cheap Detective is a 1978 American satirical comedy film written by Neil Simon and directed by Robert Moore as a follow-up to their successful "Murder by Death" (Columbia, 1976).
Mel Brooks (born Melvin Kaminsky; June 28, 1926) is an American actor, writer, producer, director, comedian, and composer.
 He is known as a creator of broad film farces and comic parodies.
 Brooks began his career as a comic and a writer for the early TV variety show "Your Show of Shows".
 He became well known as part of the comedy duo with Carl Reiner in the comedy skit "The 2000 Year Old Man".
 He also created, with Buck Henry, the hit television comedy series "Get Smart", which ran from 1965 to 1970.
Not Another B Movie is a 2010 American satirical comedy film written and directed by John Wesley Norton which peers into the processes of making a low-budget horror film.
 The film stars Byron Thames, Larry Thomas, James Vallo, David Faustino, Joe Estevez, and Ed Asner.