The film tells the story of Aron Ralston, a hiker who amputated his own arm after a boulder fell on him in a remote canyon; the process of amputation is not left to the imagination.
"I started to feel like I was going to throw up," a Hollywood filmgoer told the Times. Then she fainted, joining several other light-headed film enthusiasts who saw the movie in Telluride, Toronto and Mill Valley.
The film stars James Franco as Ralston and opens Friday in New York and Los Angeles. Be sure to check out the December issue of Outside for an exclusive behind-the-scenes article from Aron Ralston and an interview with Franco.
Read the Aron Ralston story here. Watch an exclusive clip from the movie above.