OMG RATATAT!
I picked up Ratatat's self-titled debut album yesterday from eMusic, and OMG TEH MUSIC. It's like someone took an orchestra worth of electric guitars and keyboards and played music that sounded like the wonderful stuff from the 16-bit era of gaming music. Then take the resulting track and melt it ever so slightly, to make it warm and gooey like nacho cheese. The fact that the band consists of like two guys makes this both impressive and confusing.
That might not make sense, but it doesn't change the fact that I have had Seventeen Years and El Pico running through my head for the past 24 hours straight. Highly recommended.