A masterpiece is a masterpiece. Some are better then others. Here are the ten greatest films ever, in my opinion.

8½ (Federico Fellini;1963;Italy/France)
2001: A Space Odyssey (Stanely Kubrick;1968;UK/USA)
Citizen Kane (Orson Welles;1941;USA)
The Godfather (Francis Ford Coppola;1972;USA)
Once Upon a Time in America (Sergio Leone;1984;Italy/USA)
Le Samouraï The Samurai (Jean-Pierre Melville;1967;France/Italy)
Det Sjunde inseglet The Seventh Seal (Ingmar Bergman;1957;Sweden)
Short Cuts (Robert Altman;1993;USA)
Taxi Driver (Martin Scorsese;1976;USA)
A Woman Under the Influence (John Cassavetes;1974;USA)