And I don't normally link to such things, but apparently someone is making a pornographic movie that parodies the Adam West Batman TV series. The very adult website Fleshbot has a preview. It is nsfw, xxx, inappropriate for minors, etc. Don't click here if you're somewhere where genitals appearing on your screen will get you fired, expelled, dumped, divorced, excommunicated, shunned, or a negative consequence that I haven't anticipated.
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.