Gotta agree with Radiohead and Ben Harper. My friends prefer The Doors or Zeppelin, (I love Pink Floyd too), but my favorite of all time to listen to is Jeffrey Scott Buckley. This man was a god. Check out his version of Hallelujah by Leonard Cohen or the albums "Grace", "Live at Sin-E", or "Sketches For My Sweetheart The Drunk" (put together post-humously).