If you're curious about how Sesame Street has evolved, we've compiled a list of its most popular characters—ones you're sure to spot the next time you sit down to watch with your kids.

Explore Jim Henson's puppets and Muppets in the Smithsonian's collections along with ... Sam and Friends National Museum of American History Rosita puppet used on Sesame Street National Museum of ...

Cookie Monster is probably the most aptly named character on Sesame Street. If indeed “Cookie Monster” were his actual name. First, some history: The Muppet that would eventually become known ...

Now, the program is breaking new ground by introducing a character with autism, a Muppet named Julia. While Julia has appeared in an online storybook from Sesame Street, this will be the first ...

The lovable fuzzy "Sesame Street" Muppet celebrates in a big way on Feb. 3. Elmo is turning 3-and-a-half, his age forever and always, since he joined "Sesame Street" in 1980. Just go with it.