One of Scorsese's best films of all-time.
It works really well as a companion to Goodfellas showing a slightly more corporate side of organized crime. With De Niro and Pesci picking up characters that are similar to their previous ones (but with quirks that still make the characters feel new and real) as well as a plot structure that feels a little bit played out at this point, the movie does lack some freshness. However the style and flow of the movie help smooth out those slight problems, even if it never elevates itself into the viscerally rewarding territory I usually hope to get from Scorsese.
For all that, though, I wouldn't recommend this movie. As with many Scorsese movies, it left with a sick feeling in the stomach.