David Fincher was 36 in Being John Malkovich when he played the character 'Christopher Bing (uncredited)'.
That was over 25 years ago in 1999.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 61, and has starred in 12 movies in total, 13 of those since Being John Malkovich was released.
In Being John Malkovich, I think David Fincher looks: