Re: http://knowyourmeme.com/memes/get-down
Know Your Meme scientist Yatta explains "Get Down" (ゲッダン), a Japanese remix series that originated from a glitch in the N64 game Goldeneye, where the characters and vehicles would suddenly "spaz out" if the game cartridge was only partially inserted in the console.
Some background context: http://knowyourmeme.com/nico-nico-douga