Typically my favorites are westerns, and war movies, but any good revenge movie will do too. I love it when the bad guy gets what's coming to him.
One shoot 'em up gangster movie I like real well is "Last Man Standing."
[video=youtube;ClHOOEv7kO0]https://www.youtube.com/watch?v=ClHOOEv7kO0[/video]
Jumped on this thread to add "last man standing" but you beat me to it.
Did any one say tombstone yet?