The name of Dr. Tom's old girlfriend is Amanda Mathieson. In real life, Amanda Mathieson is the name of the vice-president of finance for Temple Street Productions, the production company for this show.
The school Barb and Erika go to, is the same school used for Degrassi High, the actress who played high school Barb, was in Degrassi: The Next Generation (2001).
Dr. Tom (posing as school counselor) states that The Brady Bunch (1969) premiers two weeks after. This means they traveled to September 1969. In 2011 (when this episode was first aired), Barb would be 59 years old, and her first son would be 41 years old.