Comic Relief USA was a non-profit charity organization hosted in part by a stand-up comedian who rose to fame in what television series?
Robin Williams Robin McLaurin Williams (July 21, 1951 – August 11, 2014) was an American stand-up comedian and actor. Starting as a stand-up comedian in San Francisco and Los Angeles in the mid-1970s, he is credited with leading San Francisco's comedy renaissance. After rising to fame as Mork in "Mork & Mindy" (1978–82), Williams established a career in both stand-up comedy and feature film acting. He was known for his improvisational skills.
David Steinberg David Steinberg {'1': ", '2': ", '3': ", '4': "} (born August 9, 1942) is a Canadian comedian, actor, writer, director, and author. At the height of his popularity, during the late 1960s and early 1970s, he was one of the best-known comics in the United States. He appeared on "The Tonight Show Starring Johnny Carson" more than 130 times (second only to Bob Hope in number of appearances) and served as guest host 12 times, the youngest person ever to guest-host. Steinberg directed several films and episodes of television situation comedies, including "Seinfeld", "Friends", "Mad About You", "Curb Your Enthusiasm", "The Golden Girls", and "Designing Women".