The 39th season of Sesame Street is set to debut on August 11, so the Children's Television Workshop has provided us with a sneak peek at one of the celebrity acts to join Elmo and friends on set. Popular Canadian singer Feist will kick off the season with a special rendition of her “1 2 3 4” song.

The new season will feature a host of guest celebrity appearances, including Will Arnett, Jessica Alba, David Beckham, Heidi Klum, Neil Patrick Harris, Sandra Oh, Jenny McCarthy, Jason Taylor, and Jack Black. The show will also introduce parodies of several popular shows, such as 30 Rock, High School Musical, and Are You Smarter Than a Fifth Grader?. With a lineup like this, I may be setting up the Tivo more for myself than my daughter!