|Night Gallery: A Question of Fear (1971) [Colonel Dennis Malloy]: Commits suicide by shooting himself while talking to Fritz Weaver over a closed-circuit television; we only hear the shot, then see Leslie's hand fall on the table.
The Poseidon Adventure (1972) [Captain Harrison]: Drowned (along with the other crew members) when a giant wave crashes through and floods the boat's bridge. (Thanks to Lawrence)
Columbo: Identity Crisis (1975) [A.J. Henderson a.k.a. Geronimo]: Killed by Patrick McGoohan.
Project: Kill (Total Control) (1976) [John Trevor]: Fatally injured with a blow to the face at the end of a fight with Gary Lockwood; he dies shortly afterwards as Gary and Nancy Kwan kneel by his side.
Day of the Animals (Something Is Out There) (1977) [Paul Jenson]: Killed by wild animals. (Thanks to PortsGuy)
Creepshow (1982) [Richard Vickers]: Drowned (off-screen) when the zombies Ted Danson and Gaylen Ross bury him up to his neck at the beach; the story ends with a wave striking his face as the tide comes in.
Nuts (1987) [Allen Green]: Killed by Barbra Streisand in self-defense.
Surf Ninjas (1993) [Colonel Chi]: Electrocuted when his robotic arm is plunged into a pool of water at the end of a fight with Ernie Reyes Jr. (Thanks to Patricio and Mathew)
Dracula: Dead and Loving It (1995) [Count Dracula]: Bursts into flame (while in his bat form) after Peter MacNicol inadvertantly exposes him to sunlight by opening a hatch for Leslie to escape; Leslie still manages to get in the last word at the end of the credits. (Played for comic effect, obviously.) (Thanks to PortsGuy, Neil and Gordie)
Stan Helsing (2009) [Kay]: Playing a female role (in comically unconvincing drag), "she" is burned to death (off-screen), along with the rest of the townspeople, several years before the story begins; "she" appears as a ghost with the other townspeople throughout the movie. (Thanks to Matthew)