He is best known on the show for impersonating Bill Clinton, as well as Al Gore, Donald Trump, John McCain, Regis Philbin, Dick Cheney, Chris Matthews, Phil Donahue, Phil McGraw, Ted Koppel, John Travolta, Jesse Jackson, Geraldo Rivera, and Sean Connery, in the recurring "Celebrity Jeopardy!" skits. His impression of President Bill Clinton is currently the most frequently appeared SNL impression of all time, appearing in 87 sketches over 14 years in the cast and numerous cameos. Hammond also impersonated SNL announcer Don Pardo, filling in for Pardo on occasions when the announcer was unavailable; this dressed the stage for his taking over for Pardo on a full-time basis when Pardo died.