The IM Gay trilogy by kwarkman85. Not only do you have IM Meen take several levels in badass by defeating Hectan and then snidely rejecting Ganon's offer to join him and then trapping him in the book of Koridai, you have Link changing from a naive ditz to a certified Badass after Meen also traps Zelda and The King in the book of Koridai. And then there's the showdown between the two in the conclusion of the trilogy.
The poop Robotnik declara su amor a Reimu Hakurei (Robotnik declares his love for Reimu Hakurei) starts with Robotnik declaring to everyone in Möbius that he loves Reimu and intends to marry her give her a golden watch as a dot. Reimu, who receives the news from Remilia, and hasn't seen the foreign scientist decides to give him a chance, but everything goes downhill for Robotnik when she declares that she's a monk and she won't marry him (actually it's because Robotnik is just that ugly and evil, something that Aya wanted to warn her). Robotnik then crosses the Moral Event Horizon, when he decides to violate her and the screen Fade to Black, only to give time for Reimu to summon "PODER DE LA VARA!", which curbstomps him! After the dust settled, it was revealed that Sonic and Aya recorded and transmitted everything to the entire world, destroying his reputation! Then Marisa shows to defend her friend and shots a laser beam-spell, finishing him off!
The King and Link in TV Dinner. Who knew that simply going to the supermarket to get TV dinners could be made into a pretty epic quest? Even better, this was the first YTP made by Rotita Yamaneko, who simply said in the description, I am so noob. Well this so called noob made a better poop than some experienced YTP makers.