What stuff are you guys feeling? I always recommend BT's "This Binary Universe" to people. It might not be everyone's cup of tea, musically, but as an example of surround music it is awesome. Its a downtempo electronica album that was written specifically for 5.1, and has tons of discrete effects and activity in the surrounds.
BT is an incredible musician and a great engineer, so listening to this on a proper sound system is an amazing experience. Try it in the dark!