That Elmo the musical was weird! Not quite Gainax ending, but the whole revelation about it being a box of tissues. Wow. I guess that's what happens when you do detective stories for preschoolers. That ham actor bit was priceless, though. Tyler sold that character. He's a big ol ham himself. And there couldn't be any greater compliment when working with Muppets.
Speaking of which, Alan's in top form as usual. He's been even better than usual lately, between this and the LMNOP episode. Unexpected Kelly Clarkson parody was unexpected. Welcome, though. I can't help but start to feel some general ennui towards yet another "let's make something through trial and error" plotline, no matter how funny this one was. They really need to diversify next season as far as STEAM related plotlines go. Careful, your formula's showing.
Good to see that Joseph Gordon Levitt didn't forget his comedic routes being the co-star of the last movie in the Nolan Batman trilogy. I've been watching old Third Rock from the Sun episodes, and that's quite a leap. But he's just as good comedically as he was all the way back then. And what perfect chemistry with Murray. I'd hope to see him work with the Muppets again sometime.