PTBS-s6e2-NewAgeMedicine: The opening segment for this episode involves topless cheerleaders (Yay, science!)
PTBS-s6e5-SleepInc-1: 2 naked women and 2 naked men are "sleeping" on a bed during the opening segment
PTBS-s6e5-SleepInc-2: a guy with insomnia visits a strip club and the stripper is topless. Very short clip, and despite the show's promise that we'll find out what he's doing there (they flew the insomniac to Vegas to attend a mattress convention and he had time to kill), they don't really show anything worthy involving the club.
PTBS-s6e10-TheGoodOlDays: The hosts are sitting in front of a TV while a topless barista prepares coffee in the background. It's pretty much the same setup throughout the episode so I lumped them all into one clip.
That's the end for season 6. Compared to what was in season 5, I was a little disappointed at the seemingly reduced amount of nudity. Although I read somewhere that the first episode of season 7 deals with orgasms, so that's something to look forward to.