Never seen the muppets before. But I kind of new what it was. Went with people who knew it well. They seemed to have liked it. But for me it was a movie for very young children. The same scenario have been seen in almost all american movies for the last 30 years (same "evil vs good story" over and over where they just changed the actors, the context and the special effects) I guess you can rely to this movie if it was part of your education-culture.