He's an actor who's already known for doing a lot of his own stunts (from running at 20mph in Mission Impossible 3 to riding on the top of a moving car in Knight & Day), but Tom Cruise may have one-upped himself this time around as new images have arrived online showing the movie star dangling from the tallest building in the world.

Tom Cruise stunt

Oh that's right – while shooting the latest Mission Impossible movie, recently titled Mission Impossible: Ghost Protocol, Cruise was spotted hanging from a rope attached to the Dubai's Burj Khalifa, which at 2,717 feet makes it the world's tallest building. There's no word on the type of scene he was shooting, though one imagines it has to do with Ethan Hunt having to break into the world's tallest building by going about things the hard way. The really hard way. I mean, just looking at how tall this building is should give you a migraine.
 
Dubai's Burj Khalifa tower
 
Check out two images of Cruise and the building in this post, and let's also hand out some kudos to the poor cameraman tasked with having to hang by a rope off the side of this building in order to capture Cruise in all his stunt-lovin' glory.
 
Mission Impossible: Ghost Protocol is due out on December 16, 2011. What do you think – is this Cruise's craziest stunt ever?