Jonathan Groff was 23 in Taking Woodstock when he played the character 'Michael Lang'.
That was over 15 years ago in 2009.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 39, and has starred in 30 movies in total, 28 of those since Taking Woodstock was released.
In Taking Woodstock, I think Jonathan Groff looks: