Matthew Modine was 22 in Streamers when he played the character 'Billy'.
That was over 41 years ago in 1983.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 65, and has starred in 107 movies in total, 104 of those since Streamers was released.
In Streamers, I think Matthew Modine looks: