I have been a long time fan of They Might Be Giants. They are one of the longest running geek bands that are still around and they are fantastic! I mean really who else would write a song about an ode to a lonely Blue Canary Night Lite, or the Sun being a mass of incandescent gas, or an Alphabet of Nations? Check it out on Youtube!
Or Sargon, Hammurabi, Ashurbanipal or Gilgamesh for that matter? And placing them in Mystery Machine type 70s