Corrected entry: The movie opens with a sweeping crane shot into the movie studio where the Muppets will watch the screening of their movie. The movie studio gate is topped with a statue of a movie director with a globe spinning on his finger. The globe is spinning the wrong direction, with the continents moving to the West.
Corrected entry: When Fozzy and Kermit are singing the song "Movin' Right Along", a verse that Fozzy says is "I've never seen the sun rise in the west" or something like that. I know this is a silly movie, but it is impossible for the sun to rise in the west, it's supposed to rise in the east.
Corrected entry: When Kermit and Fozzy stop to see the man who is responsible for the whole "frog legs" thing, Kermit says, "Myth" and a girl pops out behind the billboard. Later on, as Kermit is walking around the billboard talking with the man, the girl is no longer there.