Gervais at his most charmingly abrasive is the just the asshole to flesh out Louis C.K.'s universe of shame. In the third episode of the show's first amazing season, Gervais as Dr. Ben riffs on his patient's cancer ("From her vagina to her eyeballs!"), jokes that Louie has AIDS and finally introduces C.K. to the ultimate humiliation: health care. "That's the worst penis I've ever seen in my life; it's disgusting," the good doctor tells him. Watching Gervais snicker while giving Louie a rectal exam is painfully embarrassing. Just what the doctor ordered.