While interrogating Joker, Batman holds him against the wall. Joker's hairstyle keeps swapping between two different styles, depending on the camera angle. See more...
In the restaurant scene, right when it begins with Harvey and Rachel talking, if you look to the bottom right of the screen, Heath Ledger, who is not wearing the Joker makeup, is sitting at a table with someone. [This is up for debate, as it's a strong likeness but not definitively him. Regardless, worth a look.] See more...
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The entry you are clarifying the answer for is:
|Title||The Dark Knight|
|Original entry||Do either of The Joker's "You wanna know how I got these scars" stories have a hint of truth to them? Also, why does he recount the stories to people? [There's no way to tell - the Joker gets no backstory at all in the film, other than the two stories that he tells, which contradict each other anyway. In all likelihood, they're both lies, made up on the spot. As to why he tells them, it distracts people, puts them on edge, plus, most importantly, it amuses him to do so.]|