Steven Spielberg(his resume speaks for itself)
David Fincher(directed Fight Club,'nuff said)
Christopher Nolan(five movies in and he hasn't done a bad one yet)
Michael Bay(say what you want,the man knows how to do action better than anyone)
Other that I like are Luc Besson,Ridley Scott,Guy Ritchie(when he's on his game),Tarentino,John Woo,and there are a few others that either haven't done enough movies(like Christopher McQuarrie who did The Way Of The Gun) or I only like one or two of their movies(like Woody Allen's Match Point,or Martin Scorses with The Aviator and Gangs Of New York).