Nochnoy dozor (Night Watch in English) was an excellent book by Sergei Lukyanenko. Night Watch the movie (in it’s original Russian, no need to watch a bad dub) is a mediocre movie that’s a horrible letdown from the novel it’s based off of.
Honestly, I’d say to give it a pass unless you want to see how badly a book can be translated into a movie.
The plot changes are drastic and largely unnecessary. One of the major ones is even listed as a “glitch” by Lukyanenko in his comments.. how on earth you glitch a major part of your adaptations plot is beyond me.
If you’d like to see the array of differences check the movie listing out over at Wikipedia.
Acting talent for the movie isn’t all that bad, casting is alright, with characters fitting in with their descriptions from the novel well enough. It all really comes back to the plot being a horrible adaptation that really chops the heart out of the story.
Read the stories (although I found Day Watch to be a bit odd and that it didn’t fit well with Night Watch/Twilight Watch) but give the movie a pass. Or catch it on broadcast TV.. this one’s not even worth a rent. I’ll post if Day Watch (the movie) is any better when I pick up a copy to check out.