Plot hole: In the final episode of season 6, Larry tries to find the name and phone number of the woman he was talking to in the waiting room. The receptionist begins to list the names on the sign-in sheet until she reaches 'Paula'. Larry nods to this, however Paula never told him is name, nor was there ever an off-screen moment when she could have. She could have been any of the women the receptionist named.
Suggested correction: In this scene, I assumed the receptionist was giving Larry some subtle signal that she knew it was Paula, and Larry is kind of pretending to already know.