The most important television show in the world, Sesame Street, is celebrating its 50th anniversary on Sunday, November 10th, and naturally, New York City must acknowledge it. The Empire State Building will glow green and yellow on Sunday, and Big Bird and the original Big Bird puppeteer, Caroll Spinney, helped flipped the ceremonial switch on Friday.

New York City also declared November 8th "Carroll Spinney Day"! Spinney, now 85 years old, was also the puppeteer for Oscar the Grouch:

This comes six months after it was officially declared that Sesame Street is in Manhattan—West 63rd and Broadway, to be exact.

On Saturday, November 9th, HBO, the new home of Sesame Street (first-run episodes are on HBO and will be on HBO Max; repeats still air on PBS channels), will air a special, Sesame Street’s 50th Anniversary Celebration, hosted by Joseph Gordon-Levitt, with appearances from celebrities like Whoopi Goldberg, Patti LaBelle, Elvis Costello, Meghan Trainor, Sterling K. Brown, Norah Jones, Nile Rodgers, and Itzhak Perlman.

The gang also crashed The Late Late Show this week:

Sesame Street has also been sharing adorable, heartfelt memories of the show from stars, like Costello and Rodgers—my favorites are from Lucy Liu, Padma Lakshmi, and Chance the Rapper:

While there have been many celebrities to appear on Sesame Street, it seems that Bruce Springsteen is still their White Whale. But will The Boss ever be able to top Feist's "1-2-3-4" Sesame Street video that went crazy viral and has over 277 million views? She told the NY Times that she forgets the real lyrics to the song and sometimes sings about chickens.

Unless you have children, you may not have realized that Sesame Street updated the iconic pinball "12" animation with a claymation version. And the new songs on Sesame Street are still really good—"Why I Love The Letter Y" is a legit bop (I am 43 and sometimes I sing it whenever I see the letter Y somewhere)—and Lin-Manuel Miranda is now a contributor to the incredible music of the show!

Enjoy this highlights reel...

...and this, possibly the best musical performance: