Within the rapidly changing film industry, Matt Damon has managed to stay the course as a movie star in the classic mould. Starting out as a fresh-faced prep-school kid in School Ties in 1992, his breakthrough came five years later when he starred as a maths prodigy of humble origins who bonds with an MIT professor in Gus Van Sant’s surprise hit, Good Will Hunting. At just 27 years old, he won an Academy Award with childhood friend and co-writer…