Opening a movie interestingly is very important thing, sometimes it can make the movie... I agree.The Godfather and Patton are two I like. Sexy Beast has a good opening and gets better (if you ain't seen it, do so. It's directed by the guy who did the Guiness advert with the surfers and the white horses which aired in the UK. Don't know about the rest of the world.)Leone's are the best I think. They grab you by the balls and don't let go.