Jonathan Coulton & John Roderick made a Christmas album with ten (ok, one's a Chanukah song, so nine) Christmas tracks. Style-wise, they're swimming in the same pond as They Might Be Giants, Fountains of Wayne and Flight of the Conchords. Hear more here. See also this. 2600 is a song about a kid wanting an Atari 2600 really, REALLY bad.