Mary Jo Pehl wrote and acted in MST3K, a comedy show which dug up old (terrible) sci fi flicks and then pelted jokes at it. Over the course of its run, MST3K pioneered a new comedic medium, and rose from a local access program, to a Comedy Central hit, to cult classic. Mary Jo joins Heaton to discuss how they put the show together, and the deeper side of the comedy that went into it.