Jack Benny was a beloved American entertainer whose career spanned vaudeville, radio, television, and film. Renowned for his comic timing and his character's legendary stinginess and perpetual age of 39, he became one of the most influential comedians of the 20th century. His radio and television programs, particularly The Jack Benny Program, were immensely popular for decades, defining the sitcom format. Benny's self-deprecating humor and mastery of the pregnant pause left an indelible mark on comedy, influencing generations of performers.