Written by and starring Ben Affleck and Matt Damon, this gem of a movie tells the story of a young MIT janitor whose hidden genius is only recognised after he solves a difficult graduate-level maths problem left on the board of a classroom. An MIT professor (played by Stellan Skarsgård) wants to help him reach his potential, but after he attacks a police officer, he must first seek the help of a therapist (played by Robin Williams) to get leniency.