Crook by its cover: S1E15: "When Roz gets scammed by a con artist, Frasier boasts that he's too smart for such tricks. Martin challenges him to figure out which of his three poker buddies is an ex-convict. Frasier loses the bet, but Martin is appalled to hear that Daphne has made a date with the man (as is Niles)." The Show Where Diane Comes Back S3E14: "Frasier is panic-stricken by a surprise visit from Diane (Shelley Long), the woman who left him at the altar." Updated bracket: https://docs.google.com/spreadsheets/d/1xGaRWkX9TAr1rZJGeNRQfSHZPLk6L_OsZEGxEH2biuc/edit#gid=0