When I first saw it as a teenager (cropped, edited and synchronised version!) it immediately became one of my Top ten favorite films. But I guess this had more to do with my identification with Keitel's troubled protagonist. Luckily I have a more stable personality now, or at least I hope so 

The film IS very good, but some rewatches have convinced me that it's not quite the masterpiece I once thought it to be. Still a must see, though, and one of the best debut pictures in my book. 

I think you'll like it very much, very New Hollywood, and Godard said it's one of his favorite films 

I can recommend the Region 1 DVD which has some nice extras.