Gavin Fitzgerald's documentary moves almost as fast as its subject. It's a tightly edited masterclass in visceral storytelling; eschewing voice over and heavy handed editorializing, Notorious shows how the Dublin lad become a superstar through work, willpower and wit. McGregor's sins - that the sport he dominates is violent, that he talks loud - remain unforgivable to some, but Notorious wastes no time with begrudgers. It's too busy telling a story with as much drama as a cage fight. Check it out, fight fans.