Claim: Good Will Hunting stars Matt Damon as Will Hunting.
Evidence: Written by Affleck and Damon -LRB- and with Damon in the title role -RRB- , the film follows 20-year-old South Boston laborer Will Hunting , an unrecognized genius who , as part of a deferred prosecution agreement after assaulting a police officer , becomes a client of a therapist and studies advanced mathematics with a renowned professor.