Lemmy Kilmister has earned a massive fan base in his 40-odd years as a sartorial icon, fabled consumer of substances, and front man for the long-running punk-metal concern Motorhead. Greg Olliver and Wes Orshoski trot out dozens of his more recognizable supporters for this hagiographical documentary, and though some of them (Jarvis Cocker, Joan Jett) offer genuine insight, most (Dave Navarro, the members of Metallica) just list the ways in which Lemmy is the coolest (which are many). The adulation for his outlaw persona tends to crowd out anything else, but glimpses of his memorabilia-cramped Hollywood apartment and his candid thoughts on his relationship with his grown son add texture to the image of a man heroically committed to rock music and Jack-and-Cokes.