I just saw Black Book this weekend, and I highly recommend it. I had a few friends with me that don’t care for WW2 or war films in general, but went anyway and thoroughly enjoyed it.
It concerns a Jewish Dutch singer who is trying to survive in Germany-occupied Holland. She goes to some extremes to aid the resistance and save herself.
The movie is somewhat long (two and a half hours or so), but highly entertaining and suspenseful. There is plenty of action to entertain someone who enjoys those types of movies. There is also a fair amount of nudity, which seems to be on the director’s (Paul Verhoeven) style, but you’ll find the lead to be a work of art. Just be warned that you will also see a Nazi stahlhelm, unless that interests you.