Albert Brooks was 24 in Albert Brooks' Famous School for Comedians when he played an uncredited character.
That was over 50 years ago in 1972.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 75, and has starred in 40 movies in total, 39 of those since Albert Brooks' Famous School for Comedians was released.
In Albert Brooks' Famous School for Comedians, I think Albert Brooks looks: