No idea who made the above image (click for a larger version), but it's pretty amusing. As is this, from the How It Should Have Ended people:
And this story talks about the upcoming slate of DC animated features. Expect a version of Batman: Year One accompanied by a Catwoman short. All-Star Superman just came out, and Green Lanern: Emerald Knights is next in July, so maybe we'll see Year One near the end of this year or in early 2012.
After The Scarecrow, Ra's Al Ghul, The Joker, and Two-Face, who should be Batman's next enemy in the Batman Begins/The Dark Knight series? Well, as of now we know that Tom Hardy will play Bane and Anne Hathaway will play Catwoman.
Check out the master list for all the villains covered. I've pretty much run out by now. Obviously, there are more Batman villains, but not any of significance that I know of. As of February 2009, no one is confirmed as a villain. Not the Johnny Depp Riddler, not Phillip Seymour Hoffman Penguin, nobody.