By Anne Thompson | Thompson on Hollywood August 18, 2011 at 5:47AM
Matt Damon made his on screen debut in the 80s coming-of-age film Mystic Pizza. He had one line, spoken to his mother while eating lobster: "Mom, do you want my green stuff?"
A Youtube movie posted earlier this week called "Before They Were Famous" shows 25 name actors in three minutes of clips from their pre-fame days. Some highlights: a childish Joseph Gordon-Levitt on Rosanne (plus a painful laugh track), Arnold Schwarzenegger's bare and buff torso and Sarah Jessica Parker dressed up as a Little Orphan Annie lookalike.
Take a look below. It's amazing how much you can recognize each actors' unique mannerisms even in their much-younger selves.