I was getting a little creeped out by the new guinness TV adverts. However, whilst watching the one in the middle of electra glide in blue on Film4 I bothered to follow the URL.
This website and the advert are as per usuall with guiness pure genius.
It reminds me of the I like monday video (must be a b3ta.com (viewer discretion a must))
Also there was a dnacing cow/cheesse online video maker back in the 99/2k era which I seem to have lost.
Still whilst looking for the odd cow rock video I found let them sing it for you again