I give "Gangs" two thumbs up.

Rating: 10/10 (4 January 2003)

Gangs of New York tells the story of Amsterdam Vallon (DiCaprio)and his fight for revenge against Bill "The Butcher" Cutting (Day-Lewis), the man who killed his father (Liam Neeson). Along the way he meets Jenny Everdeane (Diaz). But you didn't read this review to find out what it's about... you want to know if it's any good!
Well, yes it is. There's action, intrigue, romance, practically everything you want in a film. Though a little slow in places, the story is good and keeps you entertained the whole time.
DiCaprio provides a decent performance, nothing too spectacular but good nonetheless. Day-Lewis was the best of the entire cast. His portrayal of the character was extraordinary. He covers every aspect of Bill's mind, and gives an excellent performance. Diaz was what one would expect, alright but not brilliant. However, her Irish accent was half believable.
The movie itself, I think, is very good. If you enjoy historical movies and action, see this movie. It is violent, but the movie is called Gangs of New York, and of course it's going to be a tad gruesome in parts. However, it isn't overly gruesome for no good reason, that was just the time period. At the end of the movie, you will be glad you saw it, but make sure you go to the bathroom beforehand as it is almost three hours.