The worst part of the movie was what's-her-name's speeches about hope at the Rebel's base. She has no charisma and is a terrible actress. For a moment at the end I was worried she'd be the only one to survive, glad she didn't. In fact I love how everyone died, I really did not see that coming. The whole ending sequence, stealing the Death Star plans (so the whole second half of the movie, basically?) was pretty awesome.
I loved how Rebels were portrayed as terrorists, willing to kill random people to advance their goal, instead of just being righteous, perfect freedom fighters. I wish they did the same with the Empire and showed a "good" side of theirs, instead of making them completely evil.
Blind ninja dude was super cool and his final scene was amazing. Now THAT is what the Force is about. Not random game-y Force attacks, but trusting it, and letting it help you. More of that in EVIII please.
Other characters weren't particularly memorable though, and the whole opening sequence didn't really seem needed. Whole first half of the movie was mostly hit and miss.
Overall not bad. Could have been better though.
EDIT: Oh and I totally forgot about the Stormtroopers. Come on they were more useless than ever. It got pretty ridiculous.