Similar movies to see. Recommend!!!

Well, there has been some other comparisons on this board, like Good Will Hunting and I don't know what else. Anyway, when I saw Five Easy Pieces, the character reminded me of Cool Hand Luke. Both youngsters, fairly brilliant (i.e. they're outsiders not for lack of capacity; unlike Midnight Cowboy which other poster has compared FEP to), disillusioned about their social environment, and without a clue as to what to do with their lives (of course, Paul Newman is lovable, and Nicholson's character is not). I could say the same about the same Jack Nicholson in One Flew Over the Cuckoo's Nest.
What other movies would you say has the same kind of character and problematic situation?