One of the things I like about this series is that even if an episode is kinda meh, there's at least one sketch that was very good. In episode 18's case, I think the two stand-out sketches were the first Helvetica Standard - some pretty pitch black comedy there - and another one of Yukko's dreams. I love the fable-like story, with absurd humor the show does best. I still enjoy the shorter pieces, too. Maybe it was just average in comparison to how amazing 17 was, but I thought it lost me most of the time. Still, one person out of another being dropped from a blimp by a displeased Parsee made up for it.