The Host
The most annoying central character since Kevin McCallister actually appears to become slightly more competent after his surprisingly (and disappointingly) non-fatal lobotomy half way through this farce. The giant killer radioactive snot monster is off screen for far too long, especially since its existence is largely ignored when it's not around. There's no sense of danger. Nor is there much in the way of pace. Or anything praiseworthy, really.
It's a pity. I usually enjoy a good monster rampage movie.