This was a highly enjoyable movie. Now, mind you, it has little to do with the book series outside of the same characters - it was (very, extremely) loosely adapted from the latter part of the "Night Watch" novel, so don't expect it to at all relate to "Day Watch" the book. Like the first movie, there was a lot of great action and watching Anton get his butt kicked all over the place - which hey, that's why we love him, right? Not to mention the whole scene at Yegor's party. But you'll have to watch it to see that - it's just a good thing the old witch wasn't holding a grudge after her 12 years in the zoo as a toad (definitely HAVE to WATCH IT *grin*).
We watched it in Russian with the subtitles. They weren't as much a part of the movie as the original - but they still occasionally were created so be a part of the scenery.
(EDIT): After watching the added features, I am even more impressed with this movie. The birthday party scene was filmed in a most unique manner. The director simply rounded up a bunch of people (if I recall correctly, it was a business conference) and gave them free food and drink. After a couple of hours, when everyone was nice and buzzed, they started filtering in the actors and filming. This sort of off-the-cuff manner of filming was an enormous risk but it paid off brilliantly - most of the people in that scene, in the background, are really just people at a party, doing what people at a party do. I was VERY impressed! (/EDIT)
Fans of good sci-fi/action/thrillers will enjoy this, as will people who enjoyed the first movie. If you haven't yet read the books, do watch the movies FIRST; which is pretty much good advice for any movie adapted from a book. But still a high rating from me for this movie!