Inevitably...

YouTube.com -> "Madonna Live Earth"

Hey You
http://www.youtube.com/watch?v=DeRZL12SFJk (Official video)
http://www.youtube.com/watch?v=zztsBcldmNQ

Ray of Light
http://www.youtube.com/watch?v=e5vzh6jT2mc
http://www.youtube.com/watch?v=yyWWSRDMKHw

La Isla Bonita
http://www.youtube.com/watch?v=UPg7ONsPFxM
http://www.youtube.com/watch?v=AynBeIBtCkM
http://www.youtube.com/watch?v=rwmOzYoeq5s
http://www.youtube.com/watch?v=pJkiBxcaZSY

Hung Up
http://www.youtube.com/watch?v=y451dOBybNU
http://www.youtube.com/watch?v=O-boBiPGXNg
http://www.youtube.com/watch?v=RG-PSUaHaaw
http://www.youtube.com/watch?v=DfgH6IrIt7g
http://www.youtube.com/watch?v=w9xgqJAwXSI

And that's just the first page of the search results! At least... before they all got removed due to copyright violation! (But don't think I don't have something to watch...)

Not that Madonna is all that eco-friendly...