--very mild spoiler at the end--
Just saw it for the first time tonight. I'd heard about it a lot and received many recomendations after describing what kind of movies I like. Didn't know it was that old though. (~1970's) Anyhow I really enjoyed it. Good movie to watch alone, late at night. Deniro is badass, and very young! The movie just plays with your emotions throughout. Gets you to like one person, then hate them, and so on.
Check it out