Benjamin Kubelsky (February 14, 1894 – December 26, 1974), known professionally as Jack Benny, was an American entertainer, who evolved from a modest success playing violin on the vaudeville circuit to a highly popular comedic career in radio, television and film. He was known for his comic timing and the ability to cause laughter with a pregnant pause or a single expression, such as his signature exasperated "Well! "