Family Guy once mocked how everyone and their cousin knows the words to the Mr. Plow song, but that's part of what has made the series the best animated show in television history. Sure, we can all sing along to the Family Guy theme song just as well as we can hum the opening tune of The Simpsons, but which show is more quotable? The Simpsons, without question (if anything, early Stewie and Mayor West were the most quotable from Family Guy, but West is on the show less and less, and Stewie isn't what he once was). "Me fail English? That's unpossible" and "what could possib-lie go wrong?" are up there as favourites, but there's tons. And you know them all already.