The Day the Earth Stood Cool 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. Details Casts Title The Day the Earth Stood Cool Genres Family Animation Comedy Release Date 2012-12-09 Episode Runtime 00 Hours 22 Minutes Season Number 24 Episode Number 7 Production Companies Gracie Films, 20th Century Fox Television, 20th Television Animation, 20th Television Dan Castellaneta Homer Simpson / Abe Simp? Julie Kavner Marge Simpson / Patty Bo? Nancy Cartwright Bart Simpson / Nelson Mu? Yeardley Smith Lisa Simpson (voice) Hank Azaria Moe Szyslak / Chief Wigg? Harry Shearer Ned Flanders / Mr. Burns?