In another forum, there was a thread called "cover a song" where people would post some of their favorite covers of songs. I always enjoyed it because we got to hear music in styles we would never have thought of.

For the opener, I'm going to include the London Philharmonic Orchestra playing Pink Floyd and Led Zeppelin.
Comfortably Numb
http://www.youtube.com/watch?v=gffPKepztS8

Kashmir
http://www.youtube.com/watch?v=40VHWM1dUbU

and
All My Love
http://www.youtube.com/watch?v=74Zjwg797So