This is the last appearance of John Schneider as a main cast member and his last on the series until Season Ten's premiere "Lazarus".
This is the final episode of the series featuring Clark, Chloe, Lex, Lana, Lois, Martha, Lionel and Jonathan together in an episode.
Milton Fine speculates that the custom of toasting a drink originated from a host sharing his potentially-poisoned beverage with his fellow diners. Other originations of the custom involve the host sampling the beverage, then raising his glass to signal to others that it is safe to drink.
This is the 5th episode which finishes with the phrase, "To be continued". The other episodes were: Tempest, Calling, Exile, Commencement, Vessel, Phantom and Salvation.
The birthday banner and cake are made with the Superman colors of blue, red and yellow. Also, the journal Lois gives Clark is red with the edges of the paper tinted blue.