Aaron Yoo was 26 in Rocket Science when he played the character 'Heston'.
That was over 16 years ago in 2007.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 44, and has starred in 20 movies in total, 19 of those since Rocket Science was released.
In Rocket Science, I think Aaron Yoo looks: