From Muppet Wiki

Hollywood is a city located in California known as the center of the film industry.

• The Muppets travel to Hollywood, CA in The Muppet Movie.

• The Muppets Go Hollywood and Miss Piggy's Hollywood were filmed in Hollywood.

• The Hollywood Walk of Fame features stars honoring Jim Henson, Kermit the Frog and Big Bird.

• The Wizard in The Muppets' Wizard of Oz was originally from Hollywood before coming to Oz.