Leslie Nielsen

Film Deaths

The Sheepman (1958) [Steven Bedford]: Shot to death by Glenn Ford during the final showdown.
Beau Geste (1966) [Lieutenant De Ruse]: Is mortally wounded in a shootout he dies talking with Guy Stockwell.
Gunfight In Abilene (1967) [Grant Evers]: Shot dead by Donnelly Rhodes after drunkenly threatening to shoot him.(Thanks to Brian)

The Poseidon Adventure (1972) [Captain Harrison] Drowned (along with the other crew members) when a giant wave crashes through and floods the ship's bridge. (Thanks to Lawrence)

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] Mauled by a grizzly bear in the pouring rain.

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.

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. (after Nicolas Cowan hacks into Leslie's armour) (Thanks to Patricio and Mathew)

Dracula: Dead and Loving It (1995) [Count Dracula] Bursts into flame (while in his bat form) after Peter MacNicol inadvertently 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)

An American Carol (2008) [Grampa]: Dies after finishing telling a story to his grandchildren, we don’t know he’s dead until one of his grandsons goes to check on him. (Played for comic effect)

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)

The Wild Wild West: The Night Of The Double-Edged Knife (1965) [Major General Ball]: As he is about to shoot the unarmed Robert Conrad, John Drew Barrymore throws a knife into his back. (Thanks to Brian)
Gunsmoke: Time Of The Jackals (1969) [Jess Trevor]: A prisoner, he is being walked down the street to the jailhouse by James Arness and his deputies who are keeping a wary eye on Nielsen's gang members, expecting an attempt to free him, when Beverly Garland comes from behind and shoots him in the back. NB - on the original site Garland is listed as being shot by Nielsen, this is wrong, his gang member Kipp Whitman shoots her. (Thanks to Brian)
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 Streets of San Francisco: Legion Of The Lost (1973) [Big Jake Wilson] Beaten to death by Max Kleven who is wearing a knuckleduster under his gloves. (Thanks to Brian)
The Streets Of San Francisco: Before I Die (1973) [Insp. John T Connor]: On the roof of a racetrack grandstand, lining up a sniper shot on Ray Danton, he refuses to put the rifle down when James Wainwright finds him and James is forced to shoot him. (Thanks to Brian)

Kojak: Loser Takes All (1974) [Michael Hagar]: Shot dead at the airport by Ja'net DuBois after she learns he had killed her husband (Ed Cambridge). (Thanks to Brian).

Columbo: Identity Crisis (1975) [A.J. Henderson a.k.a. Geronimo]: Bludgeoned to death by Patrick McGoohan.