The German episode title is "Valentinstag".
This is the second of Sean Weiss' two, unrelated roles on The King of Queens. He can also be seen earlier this season in "The Fixer Upper".
Guest Grace Zabriskie and star Jerry Stiller can also be seen together in the Seinfeld episode "The Rye."
Here appearing with her in an unrelated role, Anne Meara would go on to take over the recurring role of Veronica Olchin from Grace Zabriskie.
Amy Stiller is the real life daughter of Jerry Stiller and Anne Meara.