Roger Corman’s career in show business spans nearly 60 years, so audiences may initially wonder what might be left to say in a documentary about the exploitation master. Yet Alex Stapleton’s Corman’s World: Exploits of a Hollywood Rebel offers a comprehensive, enlightening portrait of this most influential filmmaker-mogul. The doc offers a well-rounded treatise on Corman’s indelible influence, benefiting from a strong cast of talking head contributors and the ease with which Stapleton parallels his subject’s career with larger historical currents within the industry. The movie employs a straightforward linear approach in charting Corman’s filmmaking life, which began when the Stanford engineering grad found work in 20th Century Fox’s mailroom, advanced to the position of story reader, and eventually quit to begin making pictures himself during the ’50s. It charts the highlights of Corman’s various periods, including the American International Pictures and New World Pictures eras, and offers a wealth of testimony from Jack Nicholson, Martin Scorsese, Ron Howard, and others of the premier cinematic talents who got their starts with the B-movie maestro.