Anakin, Obi Wan, Mace, Han, Legolas, Gimli, Aragorn, Faramir, Boromir, Frodo, Sam, Merry..... Pippin, Gandalf, Saruman, everyone, even Denethor! everyone except Grievous, Mark Hamill, and Sidious. (everyone except those who despise being different can admit Grievous is gross)
...I don't know about his character in the books. I think he never should have been married--that just doesn't make sense to me. Kevin J. Anderson did his character well in Jedi Academy, but otherwise I think some authors don't know what to do with him except make him either sad, or this impartial leader, which annoys me too, though I'm not sure what Iwould do...(though I did; check out my post-RotJ fic if you want, I'll find the link). I think that too though says that his is an interesting and realistic character.
I think maybe it's just the way he was in the Star Wars game... Luke in the game: "I'm so cool, and I walk like a toy soldier from Toy Story, and I'm constantly having seizures, and my sarcasm isn't even funny."