Maggie Rogers
In season 51, the first season to debut on HBO Max, the Grammy nominated singer-songwriter visits her Sesame Street pals for a camping sleepover.
Nick Jonas
Along with Cookie Monster, Bert and Count, Jonas sings about how to "check that shape."
Zach Galifianakis
The funnyman taught kids the meaning of the word "nimble."
Macklemore
The rapper and Oscar the Grouch remix "Thrift Shop" and look for trash!
Sir Ian McKellen
The X-Men and The Hobbit star taught Cookie Monster a word he will never understand: "Resist."
Michelle Obama
The First Lady of the United States helps spread her message of healthy living by visiting Big Bird.
One Direction
The popular boy band visit the popular show to express the importance of the letter "u."
Mindy Kaling
Both the actress and her new friend are "enthusiastic" about dancing!
Lupita Nyong'o
The Academy Award winner taught Elmo how to love the skin he's in!
Henry Cavill
The Man of Steel stopped by the block to teach the Big Bad Wolf some respect.
Kareem Abdul Jabbar
The retired NBA star and Airplane! actor, Big Bird and more Muppets demonstrate subtraction on Sesame Street in 2013.
Tom Hiddleston
The Disney fanatic once taught Cookie Monster a valuable lesson in delayed gratificiation.
David Beckham
Whose ready to kick it up with the soccer stud? We're looking at you Elmo.
Zac Efron
It's a pose off between the High School Musical star and Elmo.
Emma Stone
Whether you want to be an actress or scientist, the Easy A star thinks you should stay in school.
Paul Rudd
How can you not help support the Earth by recycling after watching the actor's guest role?
Alicia Keys
Does Elmo have the skills to make a beautiful hit like "Girl on Fire?" We don't see why not!
Andy Samberg
The Saturday Night Live funnyman keeps the laughs coming with his new friends.
Amy Adams
How can you not smile when hanging out with Elmo?
James Marsden
The X-Men star puts his science skills to good use.
John Krasinski
The Office star takes a break from filming his NBC show to visit his favorite character.
Jack Black
It's piggy-back time for Elmo as he sits on the actor's shoulders.
Brad Paisley & Kimberly Williams
The country singer and his wife spend quality time with Elmo.