These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Growing the Beard: "Puppies and Ducklings" was most likely this as it was the first episode focused on something other than kittens or puppiesnote The baby sloths special doesn't count because of a different format and narrator, even when the focus is mostly on the usual.