David Fitzherbert was skiing down a glacier in Switzerland when the snow gave out and he dropped 70 feet before being trapped somewhat securely between two rocks...thanks to his Blackberry.
The Blackberry, seated in his breast pocket, added the extra bit of thickness that made the difference between plummeting another 700 feet and waiting 2 hours for a rescue chopper.
While Fitzherbert hardly walked away unscathed—he suffered hypothermia, a broken jaw, nearly "ripped off" nose among other ailments—he was able to call his wife from the hospital...on the very phone that saved his life. [The Sun Thanks gitemstevedave!]