Lol I also like the one where a hurricane destroyes the Flanders' house, and they build another one for them out of cheap wood, constructed by the neighborhood people. Homer says "Insted of putting in floors, we polisehd the dirt". "Ever feel like taking a wizz while you're cooking, but the bathroom's too far away? Not anymore (points to a toilet in the middle of the kitchen)"The hallway looks as if its normal, but as you go further in it gets smaller and smaller until there's a small door the size of a hand, Flander's opens it, and Barney is in there drunk saying "Welcome to the maser bedroom!"
Also another one, where Homer is being given a Lifetime Achievements award ceremony and then the two aliens come and say "PUNY humans! We have been watching your puny species ever since your planet was created, 5,000 years ago.... by GOD! *does the sign of the cross*"
There's so many that the really good ones escape me right now. I'll think of more