I just discovered (probably because it just started) io9 a blog devoted to all things science fiction. This post details an art show in LA that was inspired by Stan Lee and Marvel Comics characters. The show has cool stuff, precisely because it's not "comic art". I think my favorites are the more "serious" portraits; there are good ones of Wolverine, Angel, and the Scarlett Witch.
Man, I really want to have a shop that sells books and art stuff like this.