'Modern Family' ('Little Bo Bleep,' 2012)
It's either a sign of progress in one area or inertia in another (we'll split the difference and say both) that Modern Family received more flack over using a four-letter word than its portrayal of openly gay and interracial couples. But the beauty of the running joke — in which toddler Lily starts dropping bleeped and fuzzed-out profanities like fairy dust − is that we never know where she learned the word in question, and her parents are horrified. But when she lets one fly in the middle of a wedding ceremony, everyone cracks up and treats her foul-mouthed exclamations as if it wasn't a big deal. Ah, such pearls of wisdom from the mouths of babes.