With his wiry hair and wired personality, Mandel broke out of the ensemble pack on the Emmy-winning TV series "St. Elsewhere." But his roots are in stand-up comedy, and he performs more than 200 concert dates every year. Perhaps the world's most famous germophobe, the currently chrome-domed comedian recently hosted NBC-TV's popular "Deal or No Deal" prime time game show and judged "America's Got Talent." The manically creative comedian has opened for Diana Ross, hosted his own daytime talk show, appeared on the comedy game show "Make Me Laugh" and created the Emmy-nominated children's series "Bobby's World."