Regis Philbin may be just about the hardest-working retiree in show business right now.
Building on the popularity of their stint on on "Piers Morgan Tonight" on CNN in May 2012, Philbin suggested they do their own TV show.
"A weekly show. Once a week." he said. "We'll do that," agreed Dave.
But when Reege elaborated -- "Dave, on the way home, stops by ... " -- Letterman got cold feet: "No, no, no" he said.
Undeterred, Philbin carried on: "and we shoot the breeze together."
Ever the trouper, Philbin was game even though he claimed he didn't know who Hoda is.
"Late Show With David Letterman" airs weeknights, 11:35 p.m. ET on CBS.
TV Replay scours the vast television landscape to find the most interesting, amusing, and amazing moments - and delivers them right to your browser.
Related on HuffPost:
HuffPost Entertainment is your one-stop shop for celebrity news, hilarious late-night bits, industry and awards coverage and more — sent right to your inbox six days a week. Learn more