Watching these poignant videos of Eddie Vedder singing with Bruce Springsteen and knowing that Tom Morello was offstage waiting for his next turn, I am called to thank the numerous mentors in my life. As an artist, sometimes it is only the artwork itself that carries its influence into your life. Other times it is the day to day connection with a teacher, colleague, or partner. And for me it has also been the powerful influence of my family and friends. From my blazingly intelligent wife MarySue Heilemann , to my brilliant brother Kent Chadwick , to my supportive parents Bob and Peg Chadwick, to my teachers Sam Amato  and Jan Stussy  at UCLA and Dale McConathy  and Richard Martin  at NYU, to my colleagues at the Santa Monica Art Studios , to the always inspiring writer Peter Clothier , to my gallerist in San Francisco Sandra Lee , to my collectors over all these years, to my new friend and colleague in the arts Barbara Drucker , to my agent Gwenda Joyce , to the insightful film and the...