|Peter Falk (1927 - 2011)
Mr. Shera Danese
|The Bloody Brood (1959) [Nico]: Killed by his own henchmen when the police arrive at their hideout.
Murder, Inc. (1960) [Abe 'Kid Twist' Reles]: Thrown out of the window of his jail cell by a hitman. His body is shown lying on the ground outside afterwards.
The Twilight Zone: The Mirror (1961) [Ramos Clemente]: Accidentally (or possibly deliberately) shoots himself when he fires at his reflection in the magic mirror and his shot ricochets back at him.
Machine Gun McCain (Gli Intoccabili) (1968) [Charlie Adamo]: Machine-gunned by rival gangsters. (Thanks to Rodzilla)
Castle Keep (1969) [Sfc. Rossie Baker]: Killed in an explosion.(Thanks to Michael)
Vibes (1988) [Harry Buscafusco]: Shot in the back by either Julian Sands or Googy Gress. (It's been a while since I've seen this movie, so my memory is vague.) He dies shortly afterwards while talking to Jeff Goldblum and Cyndi Lauper.
Undisputed (2002) [Mendy Ripstein]: Dies of a heart attack (off-screen). (Thanks to Michael)