When the cast reunited at PaleyFest 2011, Busy Philipps revealed that James Franco was told, unbeknown to her and the episode's director Danny Leiner, that his character, Daniel, had been abused by his father and therefore had intimacy issues. When it came to shooting a scene where the characters get hit by water balloons, run after a car and Philipps' character gives Daniel a smack on the arm and says 'Dammit, Daniel, do something', Franco, much to everyone's surprise, reacted much harder than anyone expected him to and responded back by saying 'Don't you fucking ever touch me' and then grabbed Philipps arms and threw her to the ground.
The "Count" Chocula cereal on the Weir breakfast table scene with Joe Flaherty is the 2nd callback to his Count Floyd dracula character (host of The Monster Chiller Horror Theater) from his Second City TV days. The first callback to the character was in Episode 3 (Tricks & Treats), when Flaherty actually dresses up as Count Floyd.
Shia LaBeouf: The kid who broke his arm as the mascot instructing Sam Weir about how to climb the cheerleader pyramid.