Directed by Cast Member: William Russ (Alan Matthews) directed several episodes in seasons 5-7.
Enforced Method Acting: In the third season finale "Brother Brother" Betsy Randle (Amy Matthews) and Lindsay Ridgeway (Morgan) were not told that Will Friedle would be returning with the rest of the cast for season 4 until after the scene where Eric says goodbye to his family.
Jason Marsden, who played Jason Marsden, Eric's best friend in the first few seasons, is a sitcom staple, playing recurring guest stars in such shows as Step by Step and Full House. Better known for voice acting lately, though.
Husband-and-wife team William Daniels (Mr. Feeny) and Bonnie Bartlett (Lila Bolander, the Dean of Pennbrook who ends up marrying him).
Similarly Topanga's parents were played by the husband-and-wife Michael McKean and Annette O'Toole for one episode, although their characters' situation is reversed from the above in that the episode portrays their marriage's disintegration.
Ben Savage's brother Fred Savage appears in the episode "Everybody Loves Stuart" as a creepy lecherous college teacher.
