Mad About You - Season 3 Episode 20 -

Jamie's new client is a former TV star, Diane Caldwell (guest star Barbara Feldon) idolized by Paul and Ira in their childhood. They quickly revert back to their old ways and compete for star attention. But, Ira charms Diane before Paul and gets to spend a night with her. But, the next day, everything is about to change when Ira finds out the truth...