If your 12, this movie has it all. bad guys that turn into a wise cracking rhinosarous and a purple mohawked warthog, Shredder, of course, with his army of street kids, even super bad guys from another dimension. Teleportation, rocket skateboards, supercharged garbage trucks pimped out like an arcade/rave inside, miles of karate, ninjitsu, and kung fu fights, the perfect hot girl, a guy in a hockey mask that kicks ***, and don't forget the mutant ninja turtles and their mutant rat sensei to boot. It is as if a 12 year old wrote it!
If you're over 25, It is as if a 12 year old wrote it. Big budget, some recognizable actors, even a couple of good ones, work hard to make this movie more credible, and entertaining. But there is only so much you can do with this script. At least there was an attempt at a plot line, though it is very thin, one dimensional.
While the theme of the entire movie seems to be violence, it is presented in a manner which I did not find offensive or excessive for the audience it is clearly made for. The main message, still, is tolerance and acceptance of those that are different from us. The language is clean, the characters are over the top silly, and the hot girl is fully dressed through out.
Let the kids watch this one alone in the family room. You'll be happier for it.