Chris O'Dowd was 22 in Conspiracy of Silence when he played an uncredited character.
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 44, and has starred in 43 movies in total, 42 of those since Conspiracy of Silence was released.
In Conspiracy of Silence, I think Chris O'Dowd looks: