|Alias: The Road Home (2005) [Sasha Korjev]: Garroted by Victor Garber. (Thanks to Alex)
Lucky Number Slevin (2006) [Saul]: Shot to death (off-screen) by Bruce Willis. (Thanks to Eric)
Push (2009) [Agent Mack]: Shoots himself in the mouth, after Djimon Hounsou uses his psychic powers to convince Corey that the gun is unloaded. Shown in the background as Djimon and Neil Jackson walk away.
Salt (2010) [Shnaider]: Commits suicide by detonating his explosive vest, as Angelina Jolie looks on in shock. (Thanks to Alex and Danny)