* BigLippedAlligatorMoment: The musical numbers that occur once or twice an episode. A notable one is when [[http://www.youtube.com/watch?v=w8S2iyJpuYA everyone starts singing conversational French]] after ordering a croissant.
*** They are intentionally silly, though.
** Perhaps the ultimate example is [[http://www.youtube.com/watch?v=shP1IRGigbo "Oh Dance, Baby"]], where Bret starts singing karaoke, entirely in Korean, about the difficulty of being in love. Or something.
*** The karaoke number is a reference to an earlier joke in the episode, where Murray got the guys an off-screen "gig" at open-mic karaoke night.
** Interestingly, MushroomSamba song ''Prince of Parties'' is not one: in fact, it is actually probably the ''only'' song in the series that is directly referenced in a ''later episode'': "If you party with the party prince, you get two complimentary after-dinner mints!" sings Bret, wearing the costume from ''Prince of Parties'', in the second-season song ''Sugarlumps''.
** That's a BLAM referencing another BLAM... so meta...
*** Alternatively, all the sudden song numbers exist in the same alternate reality...
* EarWorm: Too many to list. Everyone has their favourites.
* EnsembleDarkhorse: Murray. He's probably the only truly sympathetic character.
* FridgeBrilliance: In the song "Hurt Feelings", Jemaine laments about how his family forgot to call him on his birthday. His next line in the song is "The day after my birthday is not my birthday, mom." At first, this just seems tragically hilarious. However, when you consider time zones and the fact that Jemaine's mom most likely lives in New Zealand, it makes perfect sense that she would call him the day after his birthday. It was his birthday in New Zealand.
** No, it's the other way around. If it's the 10th in New Zealand, it's the 9th in the USA. To ring someone on their birthday in the USA you have to ring them the day after their birthday in New Zealand.
* HarsherInHindsight: Jemaine finally realizes that the whole Garfunkel thing was really kinky.
* JerkassWoobie: Arguably, Albi the Racist Dragon
* NationalStereotypes: New Zealanders making fun of themselves, and New Zealanders making fun of Australians.