The piece Frasier (Kelsey Grammer) is listening to in the beginning is the finale to Johannes Brahms, 'Variations on a Theme by Haydn.'
Mimi (Stephanie Faracy) also starred in the episode Voyage of the Damned (1997) where she flirted with Niles and did "the Barracuda."
Daphne (Jane Leeves) only appears as the end credits song plays and thus has no lines in this episode.
This episode marks the first appearance of Martin Crane's (John Mahoney) mahogany cane, replacing the silver one he had been using for the entirety of the series.
This is the second time Frasier Crane dressed up as a clown. The first time was in the Cheers season 7 episode "Send in the Crane".