IMO, The Muppet Movie is fantastic, but Great Muppet Caper and Muppets Take Manhattan are both guilty of being lesser products - I remember feeling that way in the theaters when they first came out, and I was a little kid at the time. They're not bad, but they are I think examples of diminishing returns, and Muppets from Space outshines Muppets Take Manhattan simply by having more heart.
Darth Vader is becoming the Mickey Mouse of Star Wars.
"We named the dog 'Chewbacca'!"
The use of a lightsaber does not make one a Jedi, it is the ability to not use it.