"You know what? We're in trouble."
I've never seen the original Crazies by George Romero, so I have no basis in knowing if they stayed true to the original idea, but this remake is a lot like Romero's zombie films.
However, the titled antagonists are a little scarier than the traditional slowly-shambling weak-limbed Romero zombie. They have their full capacity for intelligence and mobility, if not their capacity for reason.
Then again, killing a crazy living person is a little easier than killing something that's already dead.
The filmmakers came up with some neat elements: the Thermometer of Judgment, the Car Wash of Doom, and the Truck Stop of Calamity. But this largely follows a chain of events that many zombie movies have.
It's got a fine set of actors, especially Timothy Olyphant (A Perfect Getaway's God-Damn American Jedi who is very hard to kill) as the sheriff of this small town. I didn't feel like anyone was there to just say their lines and collect a paycheck.
I have little criticism for Crazies, but there is this: There is an event which should have meant infection for the character involved, but as of the end of the film, that character seemed fine. But with a two-day time period for the infection to take effect, there might not have been enough time.
I recommend The Crazies if, like me, you tend to be a zombie movie fan. Avoid this if that kind of thing is getting old for you.