NEW YORK - OCTOBER 06: Television Personality Regis Philbin visits "Late Show With David Letterman" at the Ed Sullivan Theater on October 6, 2010 in New York City. (Photo by Jeffrey Ufberg/WireImage)
Ferguson won the one-day co-host gig in Ripa's "Men of Radio" contest.
During the show, Ferguson recounted to Ripa such funny stories such as the time he once accidentally threw away his wife's wedding dress.
They also chatted about Ferguson's recovery from heart surgery, family diets and parties. Today is Ferguson's birthday and, at the end of the show, a clown wheeled a cake onto the set.