Various Artists, Mary J. Blige, Scott Weiland, Rod Stewart, Gwen Stefani, Ringo Starr, Slash, Matt Sorum, Gavin Rossdale, P!nk, Sharon Osbourne, Kelly Osbourne, Ozzy Osbourne, Katie Melua, Dave Kushner, Duff McKagan, Elton John, Mark Hudson, Josh Groban, Robert Downey Jr., Phil Collins, Andrea Bocelli, Steven Tyler (2008)