BEING LIKE MIKE…SINGLETARY: How an Unassuming Receptionist became a Regular on-air Character on the Late Show with David Letterman

By Jon Hart Imitating sports personalities could be a sport on to itself. Of course, Comedian Billy Crystal performed hilarious impressions of Muhammad Ali and Howard Cosell. More recently, comic Frank Caliendo imitated NFL coach Jon Gruden. When U.S. Open champ Novak Djokovic retires from the court, he could headline a Las Vegas variety show,…