That was over 15 years ago in 2006.
Today he is 50, and has starred in 82 movies in total, 41 since The Departed was released.
In The Departed, I think Matt Damon looks:
The Departed scores 8 out of 10 on The Movie Database.
Matt Damon's first acting role was as 'Steamer' in Mystic Pizza, released in 1988 when he was 18.