Watch A Muppets Christmas: Letters to Santa (2008) full movie online.
Synopsis: When Gonzo accidentally diverts three letters to Santa, he talks Kermit and his friends into delivering them to the North Pole personally.
Director: Kirk R. Thatcher
Writers: Hugh Fink, Scott Ganz
Stars: Steve Whitmire, Dave Goelz, Bill Barretta
More info: IMDB, Wikipedia