I can also listen to an album looped all day long.
I like violin a lot, and all that strings. I like repetitive music.
I listen to Steve Reich a lot, John Zorn, Brian Eno, Philipp Glass, Kronos Quartet,
Malher, Satie...
In the morning I sometimes cheer me up with some punk/rock/fusion tracks (Dinosaur Jr, Uk Subs, Suicidal Tendencies, Faith No More..)
When in need of debugging/solving a problem I usually play some big beats/techno records (Spiral Tribe, Fluke, Chemical Brothers...) or Drum'n'Bass (Metalheadz, Squarepusher, Roni Size...)
Otherwise, well I listen to almost everything