1) Bjork featuring Antony Hegarty "Dull Flame of Desire"
I reckon most are familiar with Bjork but Antony is a lot less well known. He has a very unusual voice.
2) Terry Barber "The World is a Stage"
I'm not sure if the rumours are true about him actually being a Castrati but if he isn't he is as close as anyone today can be. A counter tenor who specialises in Baroque this song was massive in Downtempo and Chillout sets 2 years back.
3) Salif Keita "Moussoulou" West African House Music is the best way to describe it
4) Caspa featuring Mr.Hudson "Back for the First Time" Massively popular Dubstep track that was nuts in the UK but got no play elsewhere as far as I know.