This installment in the "Star Wars" universe has a minor surprise at the end, though generally it's pretty forgettable. The story centers around a rather inept cleaner who dreams of being a performer but gets dismissed from his job. After losing his position, he receives a warning from “Jar Jar Binks” about an impending threat: the "Chubb Chubbs." As everyone scrambles to escape – even “ET” is shown running – this do…