One one hand, I liked it’s unique take on monster films. It’s far from a simple Godzilla clone and I believe that the hand-held Blair Witch-like cinematography was a smart idea.
One the other hand, that same cinematography resulted in giving me the worst case of motion sickness I have ever experienced in a movie theatre.
I can’t entirely blame the movie. I really like The Blair Witch Project and, even though I’ve only seen it on TV screens, it still makes me a bit sick.
I would say the faster pace of Cloverfield does make it a bit worse than Blair Witch, but still it wouldn’t be fair to judge the film just because I am prone to motion sickness (it would be like saying I don’t like an amusement park because I got sick from the roller coaster).
Motion sickness aside, I enjoyed Cloverfield and hopefully the experience would be more manageable on a smaller screen when it comes out on DVD.