Easily a 10, easily. So much stuff is introduced in ESB. We get to see Han Solo use a lightsaber, lol. We meet Yoda for the first time. Luke furthers his training as a Jedi. And most importantly we learn that Darth Vader is Luke's father. Still gets me everytime...lol...fantastic movie in every way you look at it. I've heard a lot of people say this is their favorite Star Wars movie or favorite movie period so that says a lot.