8. Andrew Garfield
You could say "no way" instantly, thanks to Garfields current Spider-Man duties, but I wouldnt necessarily write him off as a good Joker casting choice because of that; if you look past the red-and-blue spandex, hes actually a pretty good face-fit. And The Joker would be so far out there as a character that it wouldn't interfere with his Spider-Man duties. He certainly possesses the skittish wiriness that I see in my head when I imagine the Joker and despite the fact that his take on the Clown Prince of Crime would most likely be immeasurably different than either Nicholsons or Ledgers, it could be a perfect opportunity for the young Brit to display his range.