At the party, Josie and The Pussycats sing the song, "Out Tonight" from the musical Rent. Rosario Dawson sang that song in the 2005 Film version of Rent. Rosario Dawson also played Valerie in the 2001 film version of Josie and The Pussycats.
The house Betty is sent to by the Black Hood is the same house from the "Are You Afraid of the Dark?" episode "The Tale of the Lonely Ghost"