Casting details are emerging for the Warner Brothers' movie Lego: The Piece of Resistance. Namely, that Arrested Development's Will Arnett will be playing Batman. Commence revelry. Channing Tatum is in discussions to play Superman, but not yet confirmed. It's still unclear just how many other trademarked properties will appear in the film, but Warner's Harry Potter is likely candidate. The movie is slated for February 2014.