Did you know that for the shot where Hans Gruber in Die Hard falls from the top of the building, Alan Rickman was actually falling from a 20-foot high model? He was holding on to a stunt man and falling on to an air bag. To get the right reaction, the director had Rickman dropped on the count of two, not three, like they had previously planned.
I would have made this face too:
I leave you humming "6 Feet from the Edge."