Mick Foley has stated that his legendary "Hell in a Cell" match was so violent that he blacked out at least once, and can't even remember portions of it.
The Undertaker wrestled the Hell in a Cell match on a broken foot.
Jim Ross's call of "Good god almighty, they've killed him!" when Mankind is thrown from the top of the Hell in a Cell was made out of legitimate concern for the well-being of his good friend Mick Foley. At first, Ross genuinely thought Foley was grievously injured - or possibly even killed - from the fall.
After falling through the top of the cage and into the ring, Mick Foley appears to smile at the camera at one point. While this perfectly fit his wrestling character as someone who enjoys pain and violence, what Foley was actually doing was trying to push his tongue through his bottom lip. His beard was too thick for it to be visible, but one of the many injuries Foley sustained in the fall was a cut clean through his bottom lip.
Mick Foley has said that after seeing how distraught his wife was, seeing how badly hurt he was following his Hell in a Cell match, he strongly considered retiring from wrestling. Even Vince McMahon himself, while thanking Foley for everything he had done for the promotion, made him promise to "never do anything like that again."