Johnny Depp to do Riddler for Batman 3?

Buzz around Hollywood circles is that J. Depp has been approached to do The Riddler for Batman 3...C. Nolan wanted someone who could match or be better than the late H. Ledger's Joker.

(Omg. Be still my heart. Haha.)

Other rumors...

Megan Fox as Catwoman and Philip Seymour Hoffman as Penguin.