Martin Scorcese has given us more than his fair share of bona fide classics - Mean Streets, Taxi Driver, Raging Bull, Casino - but when it comes to sheer rewatchability, surely Goodfellas has to come out on top.
The 1990 film is an adaptation of Nicholas Peliggi's book Wiseguy, a non-fiction account of how real life New York gangster Henry Hill went from criminal to informant. Though it's 145 minutes long and tells a story over the course of a few decades, the film's sense of momentum never once lags, thanks to the energy of the camerawork and editing, the use of music, and of course the blistering performances from Robert De Niro, Joe Pesci, Paul Sorvino, and Ray Liotta as Hill.
Before 1990, the yardstick by which all gangster films were measured was The Godfather; but since then, arguably, it's been Goodfellas. Yes, it really is that big a deal.