- 2006: Cast in Showtime's "Masters of Horror" anthology series
- 2005: Cast in the Fox series, "Stacked" opposite Pamela Anderson
- 2001: Had supporting role in the HBO adaptation of "Wit"
- 2001: Starred opposite Holland Taylor in a Los Angeles production of Yasmina Reza's play "The Unexpected Man"
- 1999: Portrayed Uncle Martin in "My Favorite Martian", the feature version of the 1960s CBS sitcom
- 1999: Appeared as himself in Forman's "Man on the Moon", the biopic of Lloyd's "Taxi" cohort Andy Kaufman
- 1999: Reteamed with Michael J Fox for the "Back to the Future IV: Judgment Day" episode of the ABC sitcom "Spin City"
- 1999: Reteamed with Clark for "Baby Geniuses", starring with Kathleen Turner
- 1999: Played the White Knight in the NBC movie adaptation of "Alice in Wonderland"
- 1998: Acted in the Off-Broadway revival of "Waiting for Godot"
- 1998: Starred in Bob Clark's "The Ransom of Red Chief", a "Wonderful World of Disney" remake of the O. Henry story
- 1997: Reprised Al for "The Wonderful World of Disney" (ABC) presentation of "Angels in the Endzone"
- 1997: Provided voice of Rasputin for animated feature "Anastasia"
- 1996: Made his CD-ROM game debut in the interactive "Toonstruck", reprising his Judge Doom character from "Who Framed Roger Rabbit"
- 1996: Executive produced Tiffanie DeBartolo's feature directing debut, "Dream for an Insomniac"
- 1995: Acted in the first interactive film, "Mr. Payback", directed by Gale
- 1995: Played Pieces, a porno projectionist with leprosy whose toes and other parts are falling off, in "Things to Do in Denver When You're Dead"
- 1994: Portrayed Al the Angel for "Angels in the Outfield"
- 1993: Reprised Uncle Fester for "Addams Family Values"
- 1993: Won an Independent Spirit Award for his outstanding supporting portrayal of a well-spoken, purposeful stick-up man in "Twenty Bucks"; Endre Bohem wrote the original screenplay in 1935, and his son Leslie rewrote it and saw it into production
- 1992: Won his third Emmy for guest appearance on Disney's "Avonlea"
- 1991: Played Uncle Fester in "The Addams Family", based on the 1960s ABC series
- 1990: Back again as Brown for "Back to the Future III"
- 1989: Reprised Doc Brown in "Back to the Future II"
- 1989: Returned to the loony bin as self-serious tidiness freak of "The Dream Team"
- 1988: Portrayed Judge Doom in Zemeckis' "Who Framed Roger Rabbit"
- 1986: Teamed with Zemeckis and Gale for the "Go to the Head of the Class" episode of NBC's "Amazing Stories"
- 1985: Portrayed Professor Plum in "Clue," based on the play inspired by the board game
- 1985: First collaboration with director Robert Zemeckis and screenwriter Bob Gale, "Back to the Future" as Doc Emmett L. Brown opposite Michael J Fox's Marty McFly
- 1984: Played the villain (Jim Ignatowski goes Klingon) in "Star Trek III: The Search for Spock"
- 1984: Appeared as Phillip Semenka in two-part episode of "Cheers" (NBC)
- 1978: Starred as 'Reverend Jim' Ignatowski in the classic TV sitcom "Taxi" (ABC); joined as regular cast member in second season; won two Emmy Awards
- 1978: "Goin' South" reteamed him with Nicholson and De Vito
- 1978: TV movie debut, "Lacy and the Mississippi Queen" (NBC)
- 1978: TV miniseries debut, "The Word" (CBS)
- 1977: Acted opposite Meryl Streep in Broadway production of "Happy End"
- 1976: Played Czar Alexander I in the PBS miniseries "The Adams Chronicles"
- 1975: Feature film debut playing one of the inmates in Milos Forman's "One Flew Over the Cuckoo's Nest", opposite Jack Nicholson
- 1973: Appeared Off-Broadway in "Kaspar", winning an OBIE and a Drama Desk Award
- 1958: Moved to New York at age 20 (date approximate)
- Provided the voice of Dr. Emmett Brown and appeared in live-action intros and epilogues for the animated series "Back to the Future" (CBS): reprised the character for the Universal Studios' themepark attraction "Back to the Future ... The Ride"
- Had Regular role as the villainous Sebastian Jackal on UPN's "Deadly Games", executive produced by Leonard Nimoy




