I just watched Cloverfield! It's really good, on the ONE hand, and on the other hand, there are lots of things which make me kind of 'but why?'.
I recommend it though- if you don't know about it, it follows a bunch of people in NYC which is being fucked up by some kind of mad monster thing. The city is being evacuated, but one bunch go back to save someone in midtown. The whole thing is filmed on a guy's camcorder, so it's really shaky and, well, camcorderey. This means that some sissies have gotten motion sickness when they've watched it at the cinema. I found the hand-held quality really worked well and was very effective at making the whole thing chilling and scary and confusing and realistic seeming. At times I wished they would have sweeping camera shots or just external shots that weren't this camcorder guy, so you could get your bearings, but well, it's obvious that that would have been dumb.
Anyway, I thought it was good, so... there.