Joseph Gordon-Levitt is probably best known for his role in former sitcom Third Rock from the Sun. But the young actor has distinguished himself outside of that series, as well. You may have seen him acting as a child in Angels in the Outfield and 10 Things I Hate About You. Gordon-Levitt has also been in 500 Days of Summer, G.I. Joe, Inception, 50/50, and The Dark Knight Rises.