Jerry Lewis. Comedian, actor, singer, film producer, screenwriter and film director, humanitarian. From the early 1950s until 2011, he served as national chairman of the Muscular Dystrophy Association (MDA). Lewis began hosting telethons to benefit MDA in 1952. From 1966 to 2010 he hosted the annual Jerry Lewis MDA Telethon, since renamed the MDA Labor Day Telethon. It has raised over 2.6 billion dollars for Musclar Dystrophy research.