Escapist Magazine has a review of the Devil May Cry Anime Movie. It's a really good review and a good read. I hardly ever watch video games turned into movies... I mean HARDLY, because they ALWAYS suck. To give you a preview of the review here's the bottom line:

Bottom Line: Mindless fighting. Action is paramount, nothing else matters. Even ignoring the fact that most of the story elements are generic and uninteresting, and some of them don't even make sense, Devil May Cry would need to do a lot more to be a compelling series, and it simply falls short.

Recommendation: I suppose if you like copious fighting or are a die-hard fan of the Devil May Cry games, you might find some semblance of entertainment from this series. Don't bother with it if you're looking for anything smarter.