Tom Cruise has been doing his own stunts for years, but he may have performed his most dangerous stunt yet for "Mission: Impossible - Rogue Nation".


There's a scene where Tom clings to the outside of an airplane as it takes off, and a new behind-the-scenes video shows he REALLY did do it on his own.

(He was strapped to the plane, but it's still pretty insane.  And they did eight takes.  Tom said "he didn't sleep the night before, and when he did it, he was scared [poopless]."