Sandy Concert Duets: Watch Springsteen & Bon Jovi, Waters & Vedder + More

Roger Waters and Eddie Vedder join hands to show their support for Hurricane Sandy relief at the 12-12-12 Concert in NYC.

Along with a slew of winning performances from the biggest music stars on the planet, 12-12-12: The Concert for Sandy Relief boasted a handful of marquee collaborations that are unlikely to ever duplicated. The Boss rocked out with Bon Jovi, the leaders of Pearl Jam and Pink Floyd got comfortably numb, and Michael Stipe linked up with Coldplay's Chris Martin for an impromptu version of R.E.M.'s signature song. And, oh yeah, members of Nirvana played with a Beatle!

Look back on all of the Concert for Sandy Relief's collaborative efforts, and tell us which one was pulled off most skillfully.

1) A pair of Jersey Boys opened up a night of too-few collaborations and duets at the 12.12.12 Concert. After playing three songs, including "Wrecking Ball" and "My City of Ruins," Bruce Springsteen brought out Jon Bon Jovi to barrel through his 1975 anthem "Born to Run."

2) Next, a black-clad Roger Waters was joined by Pearl Jam frontman Eddie Vedder for "Comfortably Numb." Clearly having a blast, Vedder ventured towards the edge of the stage late in the song to share in the holy-crap-this-is-happening reaction from the MSG faithful.

3) Because they couldn't get enough of each other, Springsteen and Bon Jovi reunited later during the latter's crowd-pleasing set with his band. The pair of Garden Staters gamely rollicked through "Who Says You Can't Go Home."

4) Hours later (seriously), an absolutely giddy Chris Martin of Coldplay conjered former R.E.M. singer Michael Stipe out of semi-retirement to sing "Losing My Religion." The subtle acoustic+two voices arrangement was a welcome touch.

5) Of course, the most inspired collaboration of the evening was saved for the finale, when Paul McCartney invited Krist Novoselic and Dave Grohl onstage for a one-of-a-kind mash-up of the Beatles and Nirvana. Joined by Foo Fighters/Nirvana touring guitarist Pat Smear, the collective tore through a new song, " Cut Me Some Slack," that will appear on the soundtrack of Grohl's upcoming film "Sound City Movie."