Is the Walt Disney Company big enough for Minnie Mouse and Miss Piggy? It better be now that Disney has acquired rights to the Muppets. In addition to Kermit and Co., the deal announced late Tuesday by Disney and the Jim Henson Company includes the entire Muppet film and television library as well as Bear in the Big Blue House. The pact doesn't, however, include Sesame Street characters such as Big Bird and Ernie. Those guys are owned by Sesame Workshop.