One joke that I sort of get but its really confusing. In the Teresa Brewer episode, during the sketch with Teresa and Sweetums, Waldorf comments "it's the old monster-and-swing bit again", or something like that, commenting that they tried to sneak it past them again. An awkward joke, since that's the only bit on the show involving a monster and a swing. I guess that's the joke, that they're doing an old routine we hadn't seen (who's to say they can't do sketches that we, the real audience, don't see?), but it still comes off as awkward.