During the narration in the beginning of this episode it's said how Susan has been feeling like Cinderella with Ian (Dougray Scott) being her prince. Dougray Scott plays the prince in "Ever After" which is based off of Cinderella.
It's said Susan felt like Cinderella. Lesley Ann Warren who plays her mom played Cinderella, as well as Dougray Scott playing Prince Charming in Ever After
Laurie Metcalf (Carolyn) and Matt Roth (Art Shepherd) previously worked together on Roseanne (1988).