From Wired:

"The Bat-plan was simple: Base-jump off one Hong Kong skyscraper, smash through the window of another, grab the Chinese crime boss, then hitch a drag chute to a passing C-130 cargo plane for a daring aerial escape. And on to Gotham! An instant, no-fuss extradition in the best tradition of American vigilantism. Just another working day for Batman and, presumably, just another feat of digital wizardry for the visual effects team. Except for one thing: Christopher Nolan, director of The Dark Knight, wanted to do it for real."