14 Pieces Of Useless Trivia About The Dark Knight

Heath Ledger created Joker's makeup look on his own the first time. Makeup artists then had to replicate his work every time after that.

Christian Bale kept Batman's cowl from The Dark Knight, but not the entire suit.

The Dark Knight is the only Batman film where he DOESN'T use a Batarang.

Matt Damon was offered the role of Harvey Dent, but had to turn it down as he was filming Invictus. Mark Ruffalo was also considered for the role.

The film was delivered to certain cinemas under various codenames, such as Wintergreen and Oliver's Army.

The building site in the final scene of the film was a real construction site. The building eventually became Chicago's Trump Tower.

Heath Ledger's clapping when Jim Gordon is named Commissioner was unscripted and the reactions from everyone are real.

That really was Christian Bale standing on top of Sears Tower. A stunt double was provided, but Bale insisted on doing it himself.

Bob Hoskins and James Gandolfini both auditioned for the role of Sal Maroni. It's not known if either were offered the role.

An IMAX camera was destroyed filming the SWAT truck chase scene. It was one of four IMAX cameras in the entire world.

The nametag on Joker's nurse uniform is Matilda - which is the name of Heath Ledger's real-life daughter.

William Fichtner was hired as a nod to Heat, a film that had a huge influence on Christopher Nolan and The Dark Knight.

To prepare for their roles, Aaron Eckhart studied the psychology of burn victims whilst Heath Ledger lived alone in a hotel room for a month.

The Dark Knight made more money in the U.S. within six days of release than Batman Begins made during its entire run.