Blue Harvest - S6-E1
Trivia: In the episode "Blue Harvest Part 1," Peter narrates a telling of Star Wars from his point of view. When Chris is walking through the bar, we see Bender from Futurama, Coach John McGuirk from "Home Movies," The Evil Monkey from Family Guy and The Alien from American Dad sitting in the background talking to people.
Blue Harvest - S6-E1
Trivia: The joke about Harrison Ford being the only actor whose career wasn't destroyed by Star Wars reportedly offended Mark Hamill. After the trilogy's success, Hamill became famous as a voice actor, playing the Green Goblin on "Spider-Man" and, more prominently, the Joker on various animated "Batman" series.
Trivia: Lois tells everyone she met a guy named Derek and he was a white supremacist. This scene is referring to the movie American History X. The character even resembles Edward Norton who plays Derek Vinyard. (00:18:55)
Blue Harvest - S6-E1
Trivia: When an explosion on the Death Star sends an Imperial stormtrooper flying, the stormtrooper lets out a Wilhelm scream.
Suggested correction: I'd say given that all Star Wars movies use the scream, it would be unusual for it not to appear.