Good Will Hunting is okay. Not great, and pretty corny. It's about a tough kid from the South side of Boston who has been abused as a kid and is highly defended. He also happens to be a genius.
His talents are discovered by a pretentious, ambitious, and fascinated professor, who wants to work with him and mentor him, but runs up against Will's nasty personality and tendency towards violence. The professor enlists a psychologist who he went to college with, Robin Williams, who, predictably, opens Will up and helps him move forward with his life.
The performances are solid, but the conflicts set up in the narrative feel a bit contrived and tiresome.