James Remar was 23 in On the Yard when he played the character 'Larson'.
That was over 46 years ago in 1978.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 70, and has starred in 101 movies in total, 99 of those since On the Yard was released.
In On the Yard, I think James Remar looks: