That was over 18 years ago in 2001.
Today he is 59, and has starred in 75 movies in total, 37 since I Am Sam was released.
In I Am Sam, I think Sean Penn looks:
I Am Sam scores 7.3 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 I Am Sam on Amazon.