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Bob Forrest is lucky he still has friends willing to be talking heads in his documentary. In the ’80s and early ’90s, Forrest led Thelonious Monster, which emerged from the same funk-meets-hard-rock Hollywood scene as Red Hot Chili Peppers, Jane’s Addiction, and Fishbone. Everyone in that world was a junkie, Courtney Love tells us, and she would know. But no frontman was as plainly self-destructive as Forrest, whose drug-addled lyrics were manic and undecorated in the Kerouac vein, and who carried his shambolic personal life on stage every night. Allegedly, he once told a crowd at the old 9:30 Club to kill George H.W. Bush. He betrayed friends and bandmates for drugs and money, but he’s since atoned by becoming an addiction counselor specializing in post-rock n’ roll rehab. In some ways, Bob and the Monster is an advertisement for Forrest’s Hollywood Recovery Services, which he founded after several years directing the addiction program at an L.A. treatment center. But director Keirda Bahruth is mostly interested in Forrest’s decade of hard living, devoting too little time to the ex-rocker’s sober years. Late in the film, Forrest offers a compelling critique of the addiction-recovery industry and hints at his own unusual methods: Rather than treat patients who are on drugs like methadone and suboxone, which are used to wean addicts off of opiates, Forrest says he’d have them go back to heroin for two months and then help them get clean. We don’t hear much more about his methodology, just a sales pitch for his new company. “I got grandiose motherfucking plans for this,” Forrest says. “This is punk rock—punk-rock recovery.”

Tuesday, June 21 at 1:15 p.m. at Discovery HD Theater; also on Saturday, June 25 at 6:15 p.m. at AFI Silver 3.