The Simpsons Season 24, Episode 7 The Day the Earth Stood Cool Family Animation Comedy IMDB 8 Country United States Duration 22 min Air Date 2012-12-09 Actors Dan Castellaneta (Homer Simpson / Abe Simpson / Barney Gumble / Krusty (voice)) Julie Kavner (Marge Simpson / Patty Bouvier / Selma Bouvier (voice)) Nancy Cartwright (Bart Simpson / Nelson Muntz / Ralph Wiggum (voice)) Yeardley Smith (Lisa Simpson (voice)) Hank Azaria (Moe Szyslak / Chief Wiggum / Apu / Comic Book Guy / Carl (voice)) Harry Shearer (Ned Flanders / Mr. Burns / Smithers / Skinner / Lenny (voice)) Overview A "cool family" from Portland moves in next door to the Simpsons. Homer is desperate to befriend them, while Marge is skeptical, thinking that being cool is not all it's cracked up to be.