The actress that plays the young version of Jackie, is Zoe Perry, who is actually Laurie Metcalf's real life daughter.
Zoe Perry is the real life daughter of Laurie Metcalf. She plays the younger version of her mother in this episode and again in 7.19, All About Rosey (1995). She again plays a younger version over 20 years later in Young Sheldon (2017).
Sara Rue (teenage Roseanne) and Sara Gilbert (Darlene) eventually worked together years later on "The Big Bang Theory."
In the flashback to Dan and Roseanne in High School, Dan is dressed as a caveman. Coincidentally, John Goodman would play a caveman, Fred Flintstone in the film adaptation of "The Flintstones" two years later.
The irony of this episode is that actress Danielle Harris from the previous two episodes played the part of Jamie Lloyd in both Halloween 4: The Return of Michael Myers (1988) and Halloween 5 (1989).