Although Hayley and Klaus appear in this episode, they have no lines. In addition, Jeff Fischer is absent.
This episode's music was not written by Walter Murphy nor Joel McNeely. The songs were written by Asa Taccone, brother of Jorm Taccone of The Lonely Island fame.
Soon after the episode aired, the song " Daddy's Gone" was made available on iTunes.
Executive producer Mike Barker revealed that there was a time that they thought that the show was not going to be renewed and thought that this was going to be the final episode. To quote Barker: "We thought, "What better way to end the series? Kill the main character!". 
During the hot tub research montage, one of the newspaper articles shows Anne Flemming and Fussy from " Not Particularly Desperate Housewives".
This episode was nominated for a Primetime Emmy Award for Outstanding Animated Program. It lost to The Penguins of Madagascar. 
According to the DVD commentary, " Hot Tub of Love" was originally written for, and recorded by Seth MacFarlane. A last-minute decision resulted in Cee-Lo Green's performance.
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