The Red Guy's Role on C&C: Cometorium Emcee.
The Red Guy's Roles on IMW: Phantom Doctor, Phantom Shoesaleman, Red Clearbottom Attorney at Law
In this episode, when a comet hits the Earth, it merely squishes its target and then sits there. In real life, when a comet hits the Earth, it causes an explosion, blowing up its target, and then dust and ice is thrown up from the impact, blocking out the sun and making everything very cold. If the explosion doesn't kill anybody, the freezing weather would.
A misconception for the episode "Comet!" is that it was censored due to dad saying "Oh Damn it". However he actually said "Oh Divot" but because it sounded like "Damn it" people complained and it was censored.
Teacher's attire was changed from a yellow dress with white spots from the first season, to an orange dress with peach spots. This is also the first time she uses her new quote: "Basically".
Greta, the school nurse later makes another appearance in "P.E." as the Junior High's P.E. teacher. The judge in "I.R. Phantom Foot" was also the judge in "Law of Gravity".
After this episode first aired, Dad's lines during his golf game we're dubbed because he shouted "Oh Damn It!"
The episode "Comet!" seems similar to an episode of The Simpsons entitled "Bart's Comet".