Ladybird eating a bomb and her head blowing off, eventually hitting the plane the Hills are on and causing it to fall while the sun slowly shows Orpheus's avatar. It's incredibly dark, but still hilarious.
It seems to be no longer available, but back in 2009 or early 2010, there was a YTP of BIONICLE: The Legend Reborn called something like "Mata Nui fails to fix a guitar". In the original film, when Ackar tries to interrupt the Gladiator Games, the fighters Tarix and Vastus are the only ones willing to hear him out. In this version...
[Tarix and Vastus fight, repeatedly clashing their weapons while screaming]