Transcript for Star-Studded 'Sesame Street' Season
Test Text1 plain meet lana from louisiana. We've had so much fun, haven't we, lana, today, with "sesame street" taking over. They have a lot of visitors, too, who come to "sesame street." Can't get enough of them. Cameron mathison paid a visit. ♪ One, two, three, four monsters walking across the floor ♪ ♪ I like counting oh, you will see ♪ Reporter: Every year, stars from all walks of fame bring the constellation to "sesame street." Where the biggest names become plain, old big kids. ♪ THE A, B, Cs AND YOU ♪ Reporter: This year, elmo and the gang invited "gma" for a sneak peek behind the scenes, as everybody's favorite fuzzy friends teamed up with their celebrity counterparts. I'm happy that another cool guy came to "sesame street." My nickname was grover because I had skinny arms and a pot belly. Your cute, little friend, grover. ♪ I'm going to keep my head up high ♪ Reporter: The celebrities come to have fun. But that's not the only reason. I'm anna. And I'm abbi. And elmo's elmo. We're going to tell you about the word absorb. Reporter: When stars come to visit sesame street, parents are more likely to tune in. And research shows that kids learn best when viewing with a parent. I got to meet a bear. I'm a tiger. I'm not a bear. Reporter: Clever humor aimed at parents may be one of the goals of these visits. But I quickly discovered that while all of these folks come in a professional capacity to help teach -- another one? Yes. We have to go home at that point. Reporter: They are, first and foremost, fans of "sesame street." I think it was one of the most fun days I've ever had. Really? Yes. Reporter: For "good morning america," cameron mathison, abc news, los angeles. It is always great to have them. I want to see -- I got a chance to take sarina to "sesame street," as well. It was phenomenal. She interviewed elmo. A 3-year-old interviewing a 3-year-old. It was such fun. Such fun. All led so wonderfully by caroline. She is senior vice president and executive producer of the iconic program. Happy to be back. We saw -- what does it mean to you to have them visit "sesame street"? We've used celebrities from the very first season. And they're really an educational tool. If we can draw the parents in and they watch with their kids, we know the educational impact is deeper. It's all by design. And the theme for this year is self-control. And that's more than just behaving. It is. The self-regulation skills, they're foundational. And they're the core skills that kids get ready for cool. Half of the kids who enter school don't have the skills. I want to say, cookie monster has been so wonderful. All morning long, practicing his patience. His self-control. His self-control. Lara, you have a very special treat for a man who loves his cookie. Cookie, I think the time has arrived. I'm so proud of you. I stayed up all night baking for you. This is a great lesson of self-control. And you deserve it, my friend. Go ahead, go ahead. I guess he likes them. Oh, he's licking the plate. Self-control. Self-control. We want to thank everybody for dropping by. I want to thank my trusty little assistant here, lana from louisiana. We want all of you to know, caroline's wonderful program, new season begins on monday. Cannot wait for it.
This transcript has been automatically generated and may not be 100% accurate.