Lisa Kudrow and Piper Perabo decide who's the Mary and who's the Rhoda in celebrity friendships.
Part I: Piper Perabo reveals the craziest stunt she's ever done and Lisa Kudrow picks who she'd love to have on "Web Therapy."
Part II: Lisa Kudrow talks about the Housewives most in need of therapy and Piper Perabo learns what the lady pond is.
Lisa Kudrow channels Dr. Fiona Wallice to diagnose Teresa Giudice and Joe Gorga's problems.
Lisa Kudrow and Piper Perabo play the amazing celebrity-filled #WWHL game that's sweeping the nation.
Lisa Kudrow's Dr. Fiona from "Web Therapy" chats with "Housewives" in need of therapy in this hilarious #WWHL montage.
Part I: You might not believe what type of instrument Mariah Carey used to write “All I Want for Christmas is You.”