Hillary Clinton and David Letterman by John Paul Filo/CBS Hillary Clinton and David Letterman by John Paul Filo/CBS
Late Show with David Letterman will celebrate its 14th anniversary with an Aug. 30 visit from no less than 2008 presidential candidate Sen. Hillary Rodham Clinton. This marks the seventh time Bill's honey has dropped in on Dave. Not to be outdone, The Daily Show with Jon Stewart has landed its own lineup of White House hopefuls: Sen. Joseph Biden is a guest on Aug. 16, followed by Wisconsin Governor Tommy Thompson (loved him in Rocky V) on Aug. 20, and Barack Obama on Aug. 22.