Andrew McCarthy, who is not only a Brat Pack alumnus but also an acclaimed travel writer, appears as a philandering chemistry teacher in this episode. David Rasche plays a David Raschesque gym teacher who is an all-brawn type. Rosalind Chao, who played Klinger's wife in M*A*S*H appears as the principal of the school where Trudy was an alumnus. A nice episode which keeps the memory of Trudy alive in this season 2 opener. It's hard to imagine this episode screened three years before the invention of Twitter!