The first ten minutes or so of the film was somewhat boring, with Luke being trapped outside in the snow and Han coming to rescue him, they could have cut that out and it wouldn't have made a difference. Then, the battle that follows the Empire's squadron was intense and satisfying. It was visually spectacular and kept you on your seat. The continuance of the appearance of new machines kept it interesting. Then comes the middle of the movie where Luke makes up for the lack of training in the first film. He goes under Yoda, and the pacing slows right down. It kinda sucks that there are two distinct parties that the film follows, it would have been more awesome if all the cast were together to get through their problems. The plot is deeper than you would expect, it doesn't resolve everything by the end and it raises a lot of questions that you would hope to be answered in the future. I didn't like how they left Han's fate until the next movie, it just didn't seem to close the film's story off properly. Leia's relationship is also a bit confusing. Then there's the big bombshell during Luke's and Darth Vader's duel, that was surprising (if you hadn't known it already with all the parodies of it over the years). It's unbelievable how good the soundtrack is, so iconic and catchy, it suits the theme of the movie well.