1. You Must Remember This

We meet the two main characters: Lionel and Jean. In the pilot episode, Lionel is in a hotel cafe giving a waitress a hard time. He is scathingly sarcastic. Jean is, similarly, seen being brittle and unbending. Lionel is working on his book "My Life in Kenya" about his life in Kenya. (This joke comes up in numerous episodes.) He requires a secretary to help with the revisions. That's where Jean's secretary service ""...Type for You"" comes in. Judith, Jean's daughter, meets Lionel at his hotel to apologize for the terrible secretary. Lionel asks Judith out. When he arrives to pick her up he is introduced to Jean. After about two seconds Jean and Lionel both independently figure out who they each suspect the other person to be: a lover last seen in 1953.