Catbug is pretty great, but I think Paralyzed Horse stole my heart.
I personally hated the queen bee episode.
And not just because I enjoy the idea of using casual sex in an attempt to fill an emptiness inside.
Firstly- how does Cartoon Network even go about putting forward that kind of message. Secondly, it was so 'Deus Ex Machina' at the end, contrived and crap.
Thirdly. Gross... LSP.
That episode was just one of several that play into the "Finn is super messed up because he's a thirteen year old boy living a life of constant violence and fear with zero normal social relationships." I've been meaning to watch it again since somebody pointed out that the sword PB holds at the end is the Finn sword.
I do think this season isn't as good as the previous ones, notably lacking a standout episode (S5 had a handful spread out through a long season, and S4 was probably the best one thus far.) The bread and butter wacky/funny episodes are there (I rather liked Dentist and Nemesis, and Food Chain and Jake the Brick both gave me my recommend dose of WTF) but the lore/long arc episodes are lacking to me. The season premiere and the Tower were okay but lacking in punch, Something Big wasn't bad and might lead to something interesting, and The Cooler did tease that World War Ooo I've been jonesing for for a while now, but they just aren't in the same league as I Remember You, or the Nightosphere arc, or Burning Low.
They've got some pacing/teasing problems. When you look at seasons 3 and 4, they're very good about not directly addressing backstory elements and leaving subtle clues for the viewer to piece things together. These days it feels like they want to show it off, which leads to episodes which exist only to talk about, say, Betty. There's less surprise and discovery, which is something that makes AT great apart from the humor and the bizarre stuff.