Parokki on 11 May 2008
I can't believe Kotaku's power level is so low they don't recognise the Nico Nico medley. It's a collection of popular meme videos from Nico Nico Douga, a hugely popular Japanese YouTube-like site.
There's literally dozens and dozens of different versions of it, all of them awesome. Try searching with "nico nico kumikyoku" or 組曲『ニコニコ動画』 to find more of them.
I could type a huge post explaining every song in it and why they're so cool, but you'd probably be better off just googling.
