I used to listen to basically nothing but classical, some baroque, and a bit of romantic. Towering over everything, however, was Jupiter, by Holst, because I played it with my friends a few years back and it was amazing. It's one of those things I tend to push on people way more often than I should, but that 2:50! It's just too good not to mention.
But around a couple years ago I heard the piano version of Plain Asia from Imperishable Night, and basically fell in love with it. Now I recommend that as well, with marginally better reception.
Aside from that, I tend to like gaming OSTs a lot, like Braid or Trine.
So yeah, that's my personal mix of musical taste I'm trying to unpersonalize by shoving it all onto this forum. Enjoy.