Laurie Metcalf guest stars in this episode. She plays Jennifer, a new college professor who ends up falling in love with Dick. She's the 2nd star from the hit series Roseanne to guest star on 3rd Rock from the Sun. The first was Roseanne Barr back in season three. She also played a forced love interest of Dick's.
Dick picks up one of Jennifer's books, ruining it, and reads the title "Don Quixote". John Lithgow played the title character in Don Quixote (2000).
In May 2019, John Lithgow and Laurie Metcalf starred on Broadway in the play "Hillary and Clinton"
Laurie Metcalf guest stars.