Okay, we all know going into this one that it's going to be bad. Shame on anyone who thought they'd be getting a classic motion picture, here. This was what you'd call a "B" movie at it's best...or worst, depending on who you listen to.
Basic plot line? Who cares. We're all here to see what happens when the star, Amee Gray takes off something. This is the early 90's when, along with really awful hair, most of your female leads would lose clothing. And...along with the aforementioned bad hair, she does. She is a very pretty lady but her acting is pretty much like watching a middle school cast do Mamet. It just ain't happening...
Now remember, this movie was done in those days before the internet. Your typical teenage boy had to find movies like this to look at semi-clad women, or pick up a men's magazine. I suspect someone had that idea when coming up with "9 1/2 Ninjas". Make a movie with some skin in it...toss in some action, and find a joke writer to add a laugh. Then, when the movie has it's theatrical run, put Gray on the cover of the VHS clamshell in as little as possible. Put the movie in your local "Lou's Movie Rental" place that's probably a gas station as well, where one can rent a movie like this, and viola! It'll make money.
The acting is pretty wooden and sophomoric. But, I have to admit I laughed at the scene where there's a Ninja attack, and the actors slip on some sort of spilled oil.
Having friends who have had parts in low budget films, I have a warm spot in my heart for a movie like this. They are a "starting point" for talent and production people. And, if you think about it, the B-movie seems to have largely disappeared due to much better technology allowing slicker and better looking productions.
Do I recommend this movie? Sure! It'll give you something to tell your friends the next day.. "Holy crap did I watch a pretty rotten movie...but the girl in it was kinda hot for 1991!" Put this in your Que for "Bad Movies I Will never Own Up to Watching, But it Had Some Redeeming Reasons to Watch"...
4 out of 10, and that's being really generous.