Paul Giamatti was 22 in She'll Take Romance when he played the character 'Heckler #2'.
That was over 33 years ago in 1990.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 56, and has starred in 100 movies in total, 94 of those since She'll Take Romance was released.
In She'll Take Romance, I think Paul Giamatti looks: