Gwen Stefani
The pop star and Jobs attended the 2008 Spirit of Life Award dinner in Santa Monica, Calif.
Arnold Schwarzenegger
The former Governator inducts the tech wiz into the California Hall of Fame on Dec. 5, 2007.
John Legend
The R&B star played an Apple event Sept. 12, 2006, in San Francisco at which Jobs announced an iPod Nano that had a 24-hour battery life and came in five colors.
Madonna
The Material Girl was in London, but Jobs used iChat to get her on the line in San Francisco on Sept. 7, 2005, when he announced that the paradigm-altering iPhone was in the works.
John Mayer
The pop star shows off his new iPod Shuffle at the 2005 Macworld Expo.
Robin Wiliams & Al Gore
The comedian and former VP chat up Jobs at the 2005 Macworld Expo in San Francisco, where Jobs introduced the $99 iPod Shuffle.
Jimmy Iovine, Bono & The Edge
The Geffen A&M chairman and U2 members joined Jobs on Oct. 26, 2004, at the California Theater in San Jose to mark the launch of a new family of iPod products.