A few of my favorites...
The Bourne series.
The new Batman Begins and The Dark Knight.
Inception
Don't know how to rate Will Smith action movies but I like most of them(Men in black, Independence day, iRobot, I am Legend, Hancock)
The Matrix
Public enemies was good too.
I like the X-Men series too i guess.
I know I'm forgetting some stuff though.
EDIT1: 8 mile!! The movie with Eminem, that movie is pretty god damn awesome.