If Michael Bay hadn't directed overblown big-budgeted special effects and testosterone-oriented flicks, he might have ended up directing Bitch Slap... things being what they turned out to be, Bay chose to wreck Transformers and Rick Jacobson directed this one instead.
First off, you have to know what you watch... if you rent or buy this and expect it to be an all-out porn, you're out of luck... the same can be said if you wish it to be the next Tarantino bit. Now that we've talked about what it isn't, let's talk about what it is: many action scenes, ladies going on ladies, lots of cleavage, slow motion on girls getting out of cars, three awesome-looking actresses, cameos from Lucy Lawless, Kevin Sorbo, Renée O'Connor and Michael Herz, and lots more.
If you're looking for a movie where you just need to shut your brain off and let these beautiful ladies lead the way and blow stuff up, you know the drill: pop it in your DVD or blu-ray player and you're off for a good time. Direction is exagerated, the actresses overact, special effects are a bit flimsy, but the overall result is quite good when you think of the budget they had and all the help they got. Most of the backgrounds have been made using CGI and that is quite obvious, but such production value wouldn't have been accessible to them with the few money they had... nevertheless, this shouldn't get in the way of enjoying this "sexploitation" movie.
Looking at the special features, it's quite excellent and fun. The making off lasts for 100 minutes and is filled with lots of behind the scenes and how they did this or that scene. You will also find 2 commentaries, deleted scenes, a "Bitch Slap 101", promos, conversation with Mother Superior and Kinki's guide to sexual harassment in the workplace... in short, you'll see how much fun low-budget movies can be.
The movie is nothing more than the usual exploitation recipe, but it works in terms of being an unofficial bastard child of Grindhouse, Machete, Hobo with a Shotgun, etc. So if you enjoy the above-mentionned ingredients, you'll have a great time.