Dawson Casting: Jennifer Irwin (later of Still Standing) plays it straight by a year in "The Tale of Locker 22", as Irwin was 18 in 1993 and her character Candy Warren was 17 when she died in 1968. It is inverted near the end when, thanks to a little life-saving time-tinkering, she grows up to be a 42-year-old principal at high school (even though the actress who played her was still 18 at the time).
As one reviewer put it, "Goosebumps'" tended to be lighthearted, but most books ended with a Downer Ending (the TV adaption sometimes toned this down.) Are You Afraid of the Dark? was the opposite: episodes tended to be creepy as sin until the end, with most episodes having a happy ending.
Hey, It's That Guy!: There had been a few over the years, such as Melissa Joan Hart ("The Tale of the Frozen Ghost"), Neve Campbell (as the protagonist in "The Tale of the Dangerous Dish"), Tatyana M. Ali (in a dual role in "The Tale of Quicksilver" as a girl who died trying to rid her room of a demon and the dead girl's twin sister. Outside of this role, Ali is best known as Ashley Banks on The Fresh Prince of Bel-Air), Gilbert Gottfried (as Roy the radio announcer in "The Tale of Station 109.1."), Bobcat Goldthwait (as The Sandman), and Tia and Tamara Mowry (as the protagonist and her chameleon doppelganger in "Tale of the Chameleons").
Retroactive Recognition: Rachel Blanchard who played Kristen, later better known for roles in 7th Heaven and the Clueless TV series. Ditto for Elisha Cuthbert who coincidentally played the same type of character Megan in the Re Tool.
For one-episode characters, Jewel Staite appeared in two different stories years before her more remembered role.