Okay, not even close to a full, spoileriffic review, but go see Piranha 3D. It stars Jerry O'Connell(Sliders), Elisabeth Shue(Leaving Las Vegas, and still amazing looking!), Christopher Lloyd(Back to the Future) and Richard Dreyfuss(whose brief scene is all kinds of awesome, if you're a Jaws fan), and is one of the most funny, violent, crazy "popcorn" flicks I've seen in a loooong time. And see it in 3D, but don't bring a date. Trust me, it's the kind of movie you want to see with a group of rowdy friends. I really hope they follow up the last scene in it with a sequel, because it was a great punchline to the whole experience.
Now go!!! And shell out the extra buckos to see it in 3D. Trust me, you'll be laughing, jumping and having a total blast. For a 4th movie in a franchise(the original, Piranha 2: The Spawning, and a Showtime remake of the original all came first), it had a surprising amount of stuff going for it. And for fans of Alex Aja's films, it lives up to the gore he delivers in those. Sweet!