Warning!
This article contains spoilers about "The Dark Knight." If you'd rather not know about some plot points, stop reading now!

Three years after "Batman Begins" reinvigorated the ailing Batman franchise to the tune of $352 million in worldwide box office earnings, Christian Bale is back in the Batsuit to battle forces of evil in Gotham City in director Christopher Nolan's "The Dark Knight," a highly anticipated sequel.

With our masked vigilante hero experiencing a crisis of conscience in a city thrown into chaos by an anarchist villain, the movie is packed with action, much of it shot in IMAX. Sadly, it's also the final completed performance by Heath Ledger, who died in January. Ledger plays the fearless and ferocious The Joker.

Bale and Ledger
Photo by Stephen Vaughan.
TM & © DC Comics

Christian Bale as "Batman" and Heath Ledger as "The Joker". See more Batman pictures.

"He's the elemental bad guy, with no cause and no motivation, so he's a much more frightening villain," says screenwriter Jonathan Nolan, who wrote the script with his brother Christopher and David S. Goyer. Ledger created the ultimate nemesis in a role that may bring him a posthumous Oscar nomination.

Christopher Nolan reassembled his "Batman Begins" cast including Bale, Gary Oldman as Lt. Gordon, Michael Caine as Alfred and Morgan Freeman as Lucius Fox, adding Ledger, Maggie Gyllenhaal as Rachel Dawes (taking over the role from Katie Holmes) and Aaron Eckhart as D.A. Harvey Dent, who eventually transforms into the vengeful Two-Face.

Production began in April 2007, with the bank robbery prologue shot in Chicago, where the bulk of the exterior and action sequences were filmed. There were also trips to Hong Kong and the U.K. for additional exterior and interior work.

"Moving back and forth between three different countries is an unusual way to make a film, but it's what we needed to do to get the size and scope of what we needed, to shoot as much as possible in real places, on real locations," says Nolan, who also endeavored to make the movie with as many practical effects as possible, using CG only when absolutely necessary.

Of course, shooting huge action sequences in busy cities and executing stunts like flipping a 40-foot truck, imploding a building and blowing up the beloved Batmobile took a lot of planning and effort, with the IMAX format adding an extra degree of difficulty, as the filmmakers explain in the following sections.

 Batstuff

­Significant improvements were made in the Caped Crusader's costume, much to the relief of Christian Bale, who had requested greater maneuverability. "Stepping back into it was much more comfortable than the first time. It was heavier than the original, but allowed so much more motion. I could move my head. I could breathe properly inside of it. It didn't squeeze my head like a vice throughout. So I had to act the rage and anger this time around," says Bale, who in the earlier Bat-movie found himself "fighting against the suit to do the fight sequences. This one was actually compatible with the Keysi fighting method."

As for the Bat-pod, born from the wreckage of the Batmobile, "We always thought it would be fun to do an ejection and eject the motorbike from the nose of the car," says Crowley, noting that the execution was far trickier than the design. "We made a non-working full-size model and then we got Special Effects to build it." On screen, it's a mix of practical and visual effects. "We blew the car up for real, with the panels blowing off, and tried to eject it on a track system but it didn't work, so Visual Effects did the transition," he notes.

You may know your Batman trivia, but what about the inner workings of the Batmobile? See how much you know in the Batmobile Quiz.

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