Atomic F-Bomb: Ben's unbleeped "Fucking" at the end of Episode 30.
Awesome Music: The 2016 Christmas episode, but especially the song "Next Year" given the popular opinion that 2016 was just terrible.
When "It's Up To Us" kicks in, you know something awesome is going down.
Catharsis Factor: The ending to episode 63, dealing with a problem that's been a long time coming. "Bye Greg."
Crosses the Line Twice: A Kitschy Local Commercial that plays on the show is an advertisement for Creepy Carl's Candy Van. It goes from horrifying to hilarious, especially when, after the ad plays, Ben immediately calls the police.
Gwendolyn, the Racist Witch. Her character is Exactly What It Says on the Tin, and because of it, she is one of the most hilarious parts of the show, despite being a relatively recent addition.
Fanon Discontinuity: A minor case; Sam has been stated to have his hair in a "man bun" on many occasions, but several pieces of fan art choose to omit this detail.
Growing the Beard: The show starts off seeming like it's going to be a clone of Welcome to Night Vale, but it's helped by the fact that there are additional cast members from the get-go, and it's not just one person at a microphone talking in what could be considered Word-Salad Horror. It breaks out into its own around Episode 7, when Tim Jensen calls the station from an alien craft, after which the show becomes more like Gravity Falls if it were made for adults.
The Woobie: Tim Jensen. Not only does he get abducted and Come Back Wrong, he didn't come back at all. The Tim that's been living with Mary since Episode 22 was some kind of impostor, and Tim was away for almost another year before Ben shot down the Rainbow Lights. When the actual Tim comes back, he finds Fake!Tim stalking Mary still, and is kicked out of the house by her because she doesn't know what's real anymore. When he's invited to stay with Troy and his wife, he ends up leaving on a hot plate and burning down their garage. When he finally speaks in Episode 46, you can tell that he's just goddamn tired. Thankfully, he's getting better.
kicks in, you know something awesome is going down.