12. Nathan Fillion
This pick might be a little too obvious, but Fillion's character Malcolm Reynolds from Firefly is arguably a better Han Solo than Han Solo was. Fillion has been busy in TV ever since Firefly was cancelled, but he's never gotten that one big role to get him that well-earned recognition. If cast in a Star Wars movie, the obvious choice would be to cast him in a role similar to Reynolds, where he could take advantage of his sarcastic mannerisms and inherent likability. However, I think he is equally capable of showing off more of his acting depth and could probably play an extremely good villain as well as a more serious minded character.