That was over 20 years ago in 2001.
Today he is 40, and has starred in 47 movies in total, 35 since Donnie Darko was released.
In Donnie Darko, I think Jake Gyllenhaal looks:
Donnie Darko scores 7.8 out of 10 on The Movie Database.
Jake Gyllenhaal's first acting role was as 'Danny Robbins' in City Slickers, released in 1991 when he was 10.