I never saw the movie, and I have only caught a few episodes of the Showtime series, but I like what I have seen. I'm not a big fan of the genre, so I'm not watching it every week, but if you are remotely a fan of the movie or the genre alone, you might like it. The acting is overall fairly good and the storylines are entertaining. I would watch the show for the beautiful Nicole Ari Parker alone. I think she's probably the best actress on the show, and she goes to make the show a lot better than it would be without her. Not only her acting, but her character is really cool too, so it works all the way around. I'd rate it 6/10 and even higher for fans of this type of show.
