"Star Wars" is really the only movie of the series that can stand completely alone. "The Empire Strikes Back" is probably the best sequel ever made, especially considering "Star Wars" was made with no expectation of a sequel (despite what Lucas might say to the contrary now). "Return of the Jedi" ties up the loose ends of ESB, although in some ways it's not as strong as the previous two, it's still a great movie.
"Star Wars" is really the only movie of the series that can stand completely alone. "The Empire Strikes Back" is probably the best sequel ever made, especially considering "Star Wars" was made with no expectation of a sequel (despite what Lucas might say to the contrary now). "Return of the Jedi" ties up the loose ends of ESB, although in some ways it's not as strong as the previous two, it's still a great movie.