Filmmaker Louis Theroux once tried to make a documentary featuring Marc but he never used the footage. Marc's been puzzled by that ever since, but when you look at the subjects of many Louis docs - addicts, criminals, hate mongers, pornographers - Marc might be lucky Louis never made that movie. Marc talks with Louis about evolving as a filmmaker, learning from Michael Moore, and what went into Louis's latest film, My Scientology Movie. This episode is sponsored by Squarespace, Fusion's The AV Club, and Casper.