I don't know. I was thinking about it and the only way I can see to have him come back would be if he became like Lex Luthor to Superman. I know I really don't want him to come back for only one episode. That would be really lame, to bring him back then kill him, or get rid of him somehow. And he had better be a bad guy. I hate it when promos make guys out to be bad and then they are good. Besides Chuck needs a nemesis, there really isn't one bad guy to go against in the plot, right now Chuck's worst enemy is himself.

Well this post is getting kind of long, so I'll leave it there.