Films:
* Grease (1978): Producer and screenwriter
* Grease 2 (1982): Executive producer
* The Last American Hero (1973): Producer
* The Sunshine Boys (1975): Producer
* The Player (1992): Actor (uncredited)
Television:
* The Sonny & Cher Comedy Hour (1971-1974): Producer
* The Carol Burnett Show (1967-1978): Writer
* The Dean Martin Show (1965-1974): Writer
* The Smothers Brothers Comedy Hour (1967-1969): Writer
Carr was also involved in several other projects, including stage productions and television specials.
While he was not an actor, he had a significant impact on the entertainment industry and is best known for his work on the iconic film Grease.