It looks like the Jow Forums have leaked some very revealing shots of The Joker in The Dark Knight, albeit with some photoshop effects thrown over the top. They include scenes from the hospital and the parade — they are major spoilers as to certain events in the movie.
As these were leaked we shall not be posting them here. Certain sites do still have them though. However I recommend staying away from these, if you can — these are things you’d want to see in the movie and not beforehand.