Donald S. Joyce (February 9, 1944 – July 22, 2015) was an American musician who was a member of the experimental music group Negativland. He also hosted a weekly radio program called Over the Edge on the Berkeley, California, radio station KPFA, for more than 30 years. Heavily influenced by Bob and Ray and the Firesign Theater, Joyce developed a number of continuing characters whom he would portray in the more theatrical episodes of Over The Edge.