I just discovered the most amazing A Cappella 'group' from Minnesota (in the US) called The Carleton Singing Knights. They're incredible! Go to this guy's Youtube account to watch all the videos. This isn't a suggestion. This is an order. These guys are fricken awesome.
I found them because there was a link to them, from the Youtube page of these guys, who have covered the Doug theme song. A Cappella. The DOUG THEME SONG.
Why don't we have cool stuff like this in Colchester?
Oh, wait, because Colchester is shit and most of the people in it don't even know how to tie their own shoelaces.