Justin Timberlake is keen to go mean and green on the big screen as Batman's foe The Riddler. The singer/actor has applauded Ben Affleck's casting as the Caped Crusader in the Man of Steel sequel, revealing he has become a big fan of the Argo director and star after working with him on new film Runner Runner last year (12). He tells U.S. radio network Fresh 102.7, "I worked with Ben last summer and I've seen his process. I think he's a brilliant filmmaker. I think he's an extreme talent so he could surprise a lot of people." And if movie bosses are considering more Batman movies, there is one comic book role he would be interested in. He explains, "I have no aspiration to ever be a superhero in a movie. Now (a) villain! I'll tell you the villain I want to play more than anything because I grew up loving Batman, funny enough, is The Riddler. The Riddler is my favourite villain. "The Riddler was, like, a sociopath. He was proper crazy. So if I'm gonna play crazy, I'm wanna play proper crazy. I'm ready. The Riddler. Gimme a call!" Jim Carrey and late TV veteran Frank Gorshin have both previously portrayed The Riddler onscreen.