'Breaking away' is about a bunch of post-school adolescents who are searching for their way in life. They live in Bloomington Indiana (USA) where they just hang around, or go swimming in a disused stone quarry.
One of the group, Dave (played by Dennis Christopher), is a cycling fanatic, and the film centres around his obsession with Italy, his botched attempts at wooing girls from the local university, and eventually a team cycle race.
If you haven't seen this film (which is more than likely), then may I recommend it for a wet sunday afternoon. It's not life-changing, but you will not regret your viewing.
I think Dennis Christopher's done a few bits since, but this is certainly the job for which he'll be remembered. A good film. Funny, simple, and tells a watchable story.