Scott Glenn was 30 in The Baby Maker when he played the character 'Tad Jacks'.
That was over 54 years ago in 1970.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 85, and has starred in 86 movies in total, 85 of those since The Baby Maker was released.
In The Baby Maker, I think Scott Glenn looks: