I really like the gun play in Revolver. Real Rock n' Rolla is awesome as well; has Gerard Butler in it.
EDIT: I'm about to go to sleep, but if I had Revolver still, I'd watch it right now. Love that movie.
EDIT 2: In American films, Jason Stratham and Gerard Butler are in mostly shitty movies. They are great in these Guy Ritchie films though.