Whenever I watch a movie such as Alive or The Thing or director Joe Carnahan's The Grey - especially in January - I ask myself the same question: Is it worth it? I know about cinematic sleight-of-hand, of course, and that the performers and crew aren't enduring anywhere near the nightmarish conditions suffered by the characters on-screen. I also presume that a fat Hollywood paycheck instantly makes any location shooting, including The Grey's outdoor shoot in wintry British Columbia, a lot more bearable. But still, all that ice and wind and trudging through thigh-deep snow ... . Is any movie experience worth spending three months in fear of losing your digits to frostbite?