Jon Heder was 24 in Peluca when he played the character 'Seth'.
That was over 21 years ago in 2003.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 46, and has starred in 37 movies in total, 34 of those since Peluca was released.
In Peluca, I think Jon Heder looks: