Harmon has emphasized the importance of the cast to making the premise of the comedy work. "Casting was 95 percent of putting the show together," he said in an interview. He had worked with several of the cast members earlier; Joel McHale, John Oliver and Chevy Chase all had cameo roles in episode 9 of Water and Power, the short film series produced by Harmon for Channel 101. Actor Chevy Chase had long been a favorite of Harmon. Though principally not very partial to sitcoms, Chase was persuaded to take the job by the quality of the show's writing. Harmon saw similarities between Chase and the character he plays on the show. Though Chase has often been ridiculed for his career choices, Harmon believed this role could be redeeming: "What makes Chevy and Pierce heroic is this refusal to stop." Harmon had to warn Chase against playing a "wise-ass" the way he often does in his roles, since the character of Pierce is a rather pathetic figure who is normally the butt of the joke himself.
