Most Bad-ass way that a character has died.

[Dalek Caan]

This is mine:

Spoiler: Gears of War 3 spoilers lay here.

When Dom dies by driving a truck into a fuel tanker and blowing the shit out of lambent and locust. Made me cry R.I.P Dom

Edit: Dam you Ninjas!!!

 

[mulletmania]

Any of the Homunculi from Fullmetal Alchemist Brotherhood. Lust and Envy in particular were enjoyable.

honorable mention goes to anyone killed by Brock Sampson or the Afro Samurai