This might be one of the most electrifying — and at times terrifying — documentaries to be released this year. It chronicles the journey of climbing heavyweights Jimmy Chin, Conrad Anker, and Renan Ozturk as they set out to climb the "unclimbable" Mount Meru, in northern India. Broken into two acts, the film follows their first attempt at the peak in 2008, when they spent 20 days on the mountain (many of them huddle together in a portaledge during a snowstorm) in sub-zero temps, only turned back 100-meters short of the summit. When they come back three-years later they are dealing with emotional and physical issues, and in spite of everything, they somehow manage to summit. The footage of the climb is simply stunning, and it's the rare climbing doc that explores the complex emotions and decisions that happen in the mountains.