Adam McKay was 35 in Anchorman: The Legend of Ron Burgundy when he played the character 'Custodian'.
That was over 19 years ago in 2004.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 55, and has starred in 13 movies in total, 13 of those since Anchorman: The Legend of Ron Burgundy was released.
In Anchorman: The Legend of Ron Burgundy, I think Adam McKay looks: