QUOTE (ChWRoCk2 @ Jul 20, 2008 -> 11:35 PM)
Maybe its me but Maggie Gyllenhall looks like a heavier version of Katie Holmes.
The thing about Nolan. He's in it for the realism.
My guess is The Penguin, The Riddler, Mad Hatter, Ventriloquist or Catwoman.
They are semi-normal characters.
Clay Face, Mr. Freeze, Poison Ivy, Croc, Bane, etc. are too unreal to be chosen.