Rumors are flying that Joseph Gordon-Levitt is close to securing a multi-picture deal to play Batman. He would appear in the Justice League film, and possibly even earlier.
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.