Hippies are dead wrong: The "great outdoors" is not great. From what we've seen in movies, tucked away in the safety and comfort of our homes, nature is a sonovabitch and no place to enjoy leisure activities. The latest film to convince us never to cross the threshold is Danny Boyle's 127 Hours, the true story of mountain climber Aron Ralston (played by James Franco), who got his arm wedged between a rock and a hard place while canyoneering in Robbers Roost, Utah in May 2003 and had to choose between losing life or limb. Did thoughts of self-administered amputation make your outdoor enthusiasm just go flaccid too? Well check out these 10 movies that make us fear nature and we guarantee you'll never have a hard-on for a hike again!