Some of music's hottest artists, including Nine Inch Nails mastermind Trent Reznor, Pearl Jam, Weezer, R.E.M., Neon Indian, Edward Sharpe & the Magnetic Zeros, and Circa Survive are supporting a new film called Countdown to Zero to make their collective message clear: No more nukes!

Don't expect Pearl Jam singer Eddie Vedder to fuel up his car at BP anytime soon.

Eddie Vedder's soulful wail is tough to replicate -- it's one of the most iconic voices in rock. But Gaslight Anthem's Brian Fallon did an excellent job Wednesday night on Late Night with Jimmy Fallon, when his band covered Pearl Jam's Singles soundtrack gem "State of Love and Trust." Watch below.

After Eddie Vedder hopped on stage last week with Band of Horses to help cover Ron Wood's "Act Together," BOH singer Ben Bridwell returned the favor Friday in New York City, joining Pearl Jam to romp through Temple of the Dog's "Hunger Strike." Check out the video below!

While opening for Pearl Jam Tuesday night in New Jersey, Band of Horses invited Eddie Vedder onstage to play "Act Together," a tune from the Rolling Stones guitarist Ronnie Wood's 1974 solo album, I've Got My Own Album. Watch the video below!

BOH often play the tune, written by Mick Jagger and Keith Richards, live.

Conan O'Brien's "Prohibited From Being Funny On Television Tour" hit Seattle Monday night on the ex-Tonight Show host's 47th birthday, and Coco brought along a few surprise guests to celebrate: Pearl Jam frontman Eddie Vedder and guitarist Mike McCready!