Regarding the Plaza Sesamo tribute, the one thing I'll give it props for is that they snuck in a reference to "Julie on Sesame Street" (the dancing trash cans). And this was years before the special surfaced online for the general public to see again.
And they sang the original Plaza Sesamo theme at the beginning (the one from the 70s era with Abelardo the dragon and Paco the parrot, which I'm very interested in seeing, as I'm intrigued by those characters' designs and am curious to see them in action).