Matt Smith and David Tenant because they're comic book nerds?
Why not Kevin Smith, Felicia Day, Wil Wheaton, and David Cross while we're at it? All four of those folks are comic book fans and gamers. (Actually, Kevin Smith might not be a gamer, I don't precisely remember.)
(This is meant tongue-in-cheek, by the way. Like, I know Felicia Day plays WoW, and kinda runs a show which depends on WoW's existence. She might sympathize with us, but I don't think it's in her interests to throw her lot in with ours. That's the basic point I'm making, here.)