My all time favorite is Baiul's 94 SP.
My favorite pairs version is Valova & Vassiliev's pro routine with one skate and one slipper. Can't find it on youtube though. As much as I love B&S, their program to me was just a beautiful skate to beautiful music but without the swan character.
Bonus is the Protopopovs Dying Swan (not Swan Lake, but gorgeous): http://www.youtube.com/watch?v=amlhlyKN9QE