It's the birthday of Jack Benny (February 14, 1894). "Well!"

Here's an example of Jack Benny [with Rowan and Martin] getting a laugh without saying anything (at the end of the video).

Jack Benny was famous for his comedic timing. He got laughs with a pregnant pause or a single expression, such as his signature exasperated "Well!" [Clip with Ethel Merman from It's a Mad, Mad, Mad World.]

On his long-running radio program Benny perfected the persona of a tightwad. Click Jack opening his vault to hear the classic bit pertaining to that gag

Here's another "skinflint" bit - with Mel Blanc, a program regular. Mel Blanc, of course, was also the voice of Bugs Bunny.

One of Jack's ongoing bits was perpetually giving his age as 39. When the price of a standard first-class U.S. postal stamp was increased to 39 cents in 2006, fans petitioned for a Jack Benny stamp to honor his stage persona's perpetual age.

Part of Benny's characterization was playing the violin badly. He was of course very proficient. Here is a classic musical comedy bit with Gisele MacKenzie, a frequent guest on his show.