That's also the first day of the new season, which features Lin-Manuel Miranda of Broadway's Tony-winning musical "In the Heights." In the episode, he stars as Freddy Flapman (pictured above, center), who tries to convince Big Bird to migrate to a new, warmer habitat.
Say it ain't so, BB. That episode will be brought to you, naturally, by the letter H and the number 40.
Having debuted on Nov. 10, 1969, "Sesame Street" is the longest-running children's series. It's been a part of my life, well, my whole life. I'm happy to share it with CC.