On the BT front, here's some of my favorites:
Mercury And Solace (Transa Mix)
Love, Peace, & Grease (Full Monty 7" Mix or Potent Pill Mix)
Godspeed (BT 12" Edit)
Flaming June (album version )
Dreaming (original UK album version)
Break On Through To The Other Side (he just premiered this at the BBC overnight broadcast, New Year's Eve)
Believer
And then BT's 13 minute remix of Mike Oldfield's "Let There Be Light" is simply stunning.