I thought it was well done, personally. I thought it was going to be cheesy and really, really boring, but luckily my $8 (price of a movie ticket out here) was well invested. I had only one gripe though, and that was about the whole "baby' thing. I thought that was a bit ridiculous.

EDIT: Shit, I just remembered something else too; they never explained why the zombies were walking the earth.