The first episode shows off Isami's fear of ghosts in, great detail (meaning we get to watch him freaking out and screaming a lot).
"Study! Success! Study! Success! Study! Success!"
Episode 4 had a scene where Ai and Haruka kept slaping each other back and forth while calling each other names until they each got tired. Ai started it because she was acting on feelings of jealousy but the whole thing de-evolved from drama to humor in moments.
Episode 5 has Ryōko once again irritated by one of Kōriyama's sexually-charged jokes.
Kōriyama: So, how're your abs doing?
Ryōko: *glaring* Have you heard of sexual harassment?
"I want nothing to do with the UFO summoning ceremony."
In episode 14, Miss Yukie introduces Atori and Tobi (in modern civilian outfits) as 'environmentalists' to Haruka's mother in order to let them stay at Haruka's house. The cheerful look on Atori's face sells it.
Whenever Miho scolds the semi-reformed Atori, leading to some very touching moments of heartwarming.