I don't think anyone would claim this movie amazing, or I hope no one would, anyway. But it does accomplish it's goal, and that's to entertain the hell out of the audience.
Most of the characters are annoying idiots, but as half of them get eaten in the fantastic piranha rampage about halfway through the movie, I can't rightly hold it against them. Some of the characters are solid, though - Sheriff Forester does all she can to both ensure the safety of her own children and her community. Deputy Fallon goes all out in trying to save people during the rampage. Jake's valiant attempts to save Kelly, a character herself who sort of got pulled into this whole thing, show him a person of high worth. So we have some solid people, who I feel make up well for the Derricks of the world.
The gore in the movie, at least to me, is the biggest selling point, and I feel they did pretty well. The aforementioned massacre has long been a favorite scene of mine - the blood, the chaos, all done so wonderfully. The nudity's a bit less captivating, but I can only imagine it'd help pull some more people in to watch the film. Overall, this second Piranha remake (after the 1995 failure few recall) is quite enjoyable for what it is. It's not amazing, not to me, but it does what it set out to do, and that's all I can ask. 7.5/10 (rounded down to 7/10 to fit site's format).