This is why Robert Downey jr is cast to play Tony stark a.k.a Iron Man. Because he is iron man in real life too.
This is a news that i found on the net :
Robert Downey Jr. saved a film extra from a rampaging robot.
The 44-year-old actor halted shooting on 'Iron Man 2' and rushed to help the man, who had been injured during a scene.
A source said: 'Robert charged into a live scene yelling, 'Cut! Cut!' The extra was writhing on the ground in agony after a rampaging evil robot smashed him flat.'
The extra had been involved in a sequence which saw a group of people running away from a group of robotic villains.
Although the man was accidentally hit by a stuntman in an iron costume, filming continued because no-one noticed he was in pain.
The source added to the National Enquirer magazine: 'Cameras kept cranking until Robert, who wasn't in the scene, suddenly noticed one extra twisting in pain and moaning, 'Help, I've broken something.' '
Robert called for paramedics and comforted the man until they arrived.
The injured extra was taken to hospital, where he was diagnosed with a broken hip.
How nice of him.....