That was over 16 years ago in 2003.
Today he is 59, and has starred in 75 movies in total, 27 since Mystic River was released.
In Mystic River, I think Sean Penn looks:
Mystic River scores 7.6 out of 10 on The Movie Database.
Sean Penn's first acting role was as 'Cadet Captain Alex Dwyer' in Taps, released in 1981 when he was 21.
Find DVDs, posters and memorabilia about Mystic River on Amazon.