I thought it was excellent, bar a few niggles (I'm sure these have all been mentioned before, just voicing my 2p):
1) The camera-work during the action scenes: I felt sick for the first 15 minutes of the film. What was the point in spending $200m+ on scenes where you can't tell what's going on?
2) Some very obvious green-screening, which really shook you out of the action.
3) It was a bit short. I was expecting at least another half hour.
If only Martin Campbell had directed this, it would've been completely awesome.
Having had my little moan, I thought the plot was fine, DC is a worthy Bond, and the villain was believable. Can't wait for the next one, but for the love of GOD, please no shakycam...