Yeah, great animation, thanks for reminding us of it blade - it's been a long time since I watched it.
"Hey Hey 16K" was posted all over the net a few years ago, including here, but it's soooo good and catchy that it's always worth a mention for those who've missed it.
As DrF said, the original Flash version is much better. The sound, framerate and clarity haven't been massacred by YouTube's horrible compression. Plus you'll get to see the original authors other flash work - some great stuff on his site.
If I remember rightly, there is another catchy one using Patrick Moore on the Xylophone and Buffy's swearing keyboard.