Monday night's Tibet House benefit concert was a rockstar-studded affair, featuring performances from the likes of Lou Reed, Patti Smith, Michael Stipe, Sigur Rós, and Debbie Harry. We weren't there, but Rolling Stone was on hand to witness some rare R.E.M.:Michael Stipe and Patti Smith -- just two of the heavyweights on hand to celebrate Tibetan culture at Carnegie Hall's ...