Now I don't normally watch much TV, but I was channel surfing late one night when I stumbled across this series. It took five minutes to hook me, the mix of drama and comedy somehow making the supernatural element trivial, and focusing instead on the humanity shown so clearly in these three unusual flatmates. Since then I've never missed a single episode. Season 4 has been commissioned, and I can't wait to see what the BBC do with it. Highly recommended.