Peter Boyle

Peter Boyle (1935 - 2006)

Film Deaths[]

Ghost in the Noonday Sun (1973) [Ras Mohammed]: Stabbed in the back when Peter Sellers throws a sword at him on the island; shown in a black & white "silent movie"-style prologue.
Crazy Joe (1974) [Joe] Killed by rival gangsters.
Young Frankenstein (1974) [The Monster]: Peter plays Gene Wilder's re-animated creature; I don't know for certain whether he also played the hanged body from whom the creature was made, but I thought I'd list it just in case. (Thanks to Giulia)
Swashbuckler (1976) [Lord Durant]: Stabbed in the chest when Robert Shaw throws his sword into him as he holds Genevieve Bujold hostage. He then backs up, going over the balcony.
Beyond the Poseidon Adventure (1979) [Frank Mazzetti]: Gunned by Dean Ferrandini (whom he kills as well); he dies shortly afterwards while talking to Angela Cartwright. (Thanks to Liz)
Where the Buffalo Roam (1980) [Carl Lazlo, Esq.]: Presumably drowned (off-screen) when he disappears at sea; his disappearance is mentioned in Bill Murray's narration. (Thanks to Alex)
Yellowbeard (1983) [Mr. Moon]: Falls into a pool of acid at the end of a swordfight with Martin Hewitt. (Thanks to Anton and Tommy)
Echoes in the Darkness (1987) [Sgt. Joe Van Nort]: Dies of a heart attack while practicing at the police firing range.
Sweet Evil (Final Vendetta) (1996) [Jay Glass]: Beaten to death (off-screen) with a baseball bat by Bridgette Wilson in his office; the scene ends just before the impact.
The Adventures of Pluto Nash (2002) [Rowland]: Shot to death by Serge Houde in an elevator. (Thanks to Tommy)

TV Deaths[]

From Here to Eternity (1979) [Fatso Judson]: Presumably killed by Steve Railsback. (I haven't seen this mini-series, but I have seen Ernest Borgnine's death in the same role from the 1953 film.)
Poochinski (1990 failed pilot) [Stanley Poochinski]: Hit by a car at the beginning of the pilot, he provides the voice of the talking bulldog his character is reincarnated as for the rest of the episode.
NYPD Blue: Don We Now Our Gay Apparel (1995) [Dan Breen]: Stabbed to death off-screen by Enrico Colantoni. His body is seen when Dennis Franz discovers him.
The X-Files: Clyde Bruckman's Final Repose (1995) [Clyde Bruckman]: Commits suicide by asphyxiating himself with a plastic bag over his head (on top of taking an overdose of pills). (Thanks to Kim)