Watch Fearless, Possibly Crazy Tom Cruise Scale World's Tallest Building for Mission Impossible 4

How hardcore is Tom Cruise? So hardcore that he actually scaled the tallest structure in the world -- Dubai's Burj Khalifa, which stands at just over a half-mile high -- for a perilous, stomach-churning action sequence in the upcoming Brad Bird-directed Mission Impossible: Ghost Protocol. Video proof of the superstar's stunt hardcore-ness ahead.

The above featurette shows Mission Impossible star/executive producer Cruise swinging from the 2,723 ft. tower effortlessly as Brad Bird (The Incredibles, Ratatouille) captures the sequence in IMAX. Movieline had the privilege of watching the finished Burj Khalifa sequence last week and will post about what we saw tomorrow with the release of the film's new trailer.

IMF agent Ethan Hunt returns to theaters for Mission Impossible's fourth installment this December 16.

[via Yahoo!]

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