Assassinated By: Frank Nitti
Cause of Death: Machine gun fire
There's nothing like a little bait-and-switch to make a guy feel like a total fool, especially when the "switch" part plays out like it does in this great scene from Brian De Palma's The Untouchables. Frank Nitti (Billy Drago), a first-class hitman, sends a knife-wielding crony into Jim Malone's (Sean Connery) home to lure the old man outside.
De Palma cleverly uses a first-person POV to show the fake killer entering Malone's home, concealing the identity long enough to put Nitti out of one's mind. Once Malone steps foot outside, he catches sight of Nitti and gives an "I'm f'n screwed" look as Nitti pumps him full of lead.