The new version is actually better. It's still a fairly ham-handed revenge-of-the-nerd horror fable, but you don't go to a movie like Willard for subtlety. You go to be skeeved out by rats, rats, and more rats, and I'm tempted to say that Willard does a fairly rat-tastic job of it.
A silly, snarling romp -- a fun (if you're in the mood for it), sometimes scary look at the life of a socially awkward man whose best friend is a white rodent he names Socrates.