This was Mila Kunis' favorite episode because she got to play Dorothy in the fantasy scene, a role she was denied in grade school.
Jackie (Mila Kunis) has a dream about "The Wizard of Oz" where she is Dorothy. Kunis later played Theodora the Witch in "Oz the Great and Powerful (2013)", a loose prequel to the traditional "Wizard of Oz".
This episode features a rare January tornado in Wisconsin. In January 2008, almost five years after this episode aired, an actual tornado outbreak occurred in southeastern Wisconsin. It's notable that in the 2008 outbreak, most people noticed that the weather was unusually humid and warm for the season, as did Kelso toward the beginning of this episode ("It's like a million degrees out here!").
Prior to the airing of this episode, there were only two recorded January tornado outbreaks in Wisconsin, 1844 and 1967.
Pamela Sue Martin (the Wizard) starred as Nancy Drew in "The Hardy Boys/Nancy Drew Mysteries (1977)". Jackie (Mila Kunis) is a huge Nancy Drew fan.