The Golden Globe

From back cover Ace paperback September 1999:

*All the universe is a stage* -- and Sparky Valentine is its itinerant thespian. He makes his way from planet to planet as part of a motley theater troupe, bringing Shakespeare -- a version of it anyway -- to the outer reaches of Earth's solar system. Sparky can transform himself from young to old, fat to thin, even male to female, by altering magnetic implants beneath his skin. Indispensable hardware for a career actor -- and an interstellar con man wanted for murder...