He gained popularity through numerous appearances on various talk shows, including "The Tonight Show with Jay Leno", "Late Show with David Letterman", "Late Night with Conan O'Brien", "Dennis Miller Live", "The Late Late Show", "The Rosie O'Donnell Show", "The Ellen DeGeneres Show", and "Live with Regis and Kathie Lee".
Свою карьеру Кевин начал в комедийных стенд-ап и телевизионных ток-шоу, включая "The Tonight Show with Jay Leno, Late Show with David Letterman, Late Night with Conan O’Brien, Dennis Miller Live, The Late Late Show, The Rosie O’Donnell Show, The Ellen DeGeneres Show and Live with Regis and Kathy Lee".