If you can ignore the dumbass psycho-fans shouting the most ridiculous things they can imagine into the camera’s microphone…
then you might get a bit of a thrill by watching Bruce Springsteen join The Arcade Fire for:
Springsteen’s “State Trooper”:
http://www.youtube.com/watch?v=Ug2AsESk_-w
and Arcade Fire’s “Keep the Car Running”:
https://youtube.com/watch?v=j4Zkz2pUt_g
Here’s a color video of “State Trooper”:
https://youtube.com/watch?v=J5bT1_niUgk
And a color version of “Keep the Car Running”:
Thanks, Don, for the links!