The xx is my new fave band. This quartet from SW London is kinda like the UK's late night answer to Black Kids. They feature dual his & hers melancholy vocals, chilly synths, strong bass lines and catchy dance rhythms. The xx is clearly '80s-influenced, but not at all copycat.
Here are videos of two of my favorite songs from their album--"Islands" and "Basic Space." Another standout is "Crystalised."