A three-hour documentary trailing a group of mute Carthusian monks living in the French Alps … wake up! Philip Gröning’s monk movie, now on DVD, isn't mind-numbing, it's mind-altering. As the movie switches between pristine HD video and grainy Super-8, time slows with each stunning shot of monks praying, the sun setting, and seasons changing. The extras include behind-the-scenes footage showing how the filmmaker got by for six months with no film crew.