The Hustler (1961)

Directed by Robert Rossen

Fast Eddie Felson is a small-time pool hustler with a lot of talent but a self-destructive attitude. His bravado causes him to challenge the legendary Minnesota Fats to a high-stakes match.

I have no personal investment in the game, but I was completely gripped by Paul Newman's superb performance. Almost certainly the best film about pool ever made, and probably the best sports film as well.