I thought he was really cute as Tommy on 3rd Rock. Then was shocked (but pleased) by
his role in Mysterious Skin. I haven't seen most of his movies, not even Inception yet.
But I think he is a cool, nice guy. The jury is still out on his singing voice, but the song
on youtube he did with Zooey Deschanel was pretty nice.
Search for: What Are You Doing New Years Eve? by Zooey Deschanel and Joseph Gordon-Levitt
I'm surprised nobody mentioned the part he played in HESHER. I haven't seen it
either but I know he spends alot of time in it shirtless.