Kramer (Michael Richards) remarked at the end of the episode: "Boy, I really liked the two of you much better when you weren't a couple." It was a poke at NBC who desperately wanted Elaine (Julia Louis-Dreyfus) & Seinfeld together. Jerry Seinfeld and Larry David were against the idea of Jerry and Elaine being in a 'will-they, won't-they' relationship.
Larry David was nominated for an Emmy award in the Outstanding Writing in a Comedy Series category for this episode.
This episode marks the first appearance of Siobhan Fallon Hogan, Elaine's (Julia Louis-Dreyfus) roommate. Tina appears two more times during the series: in season three's The Truth (1991) and in season five's The Opposite (1994).
The quotation in the birthday card is from William Butler Yeats' poem "The Municipal Gallery Revisited." The actual quotation reads: "Think where man's glory most begins and ends, And say my glory was I had such friends."