Cloverfield or The Blair Witch Project
Though both movies recieved scathing reviews, and great ones they both imo are great. Blair Witch was fun, but if you sat down thinking you were gonna get treated to a special effects fest then youd hate it. I do admit the girl playing Heather should have died first because the chick never dies first, and damn she was loud. Alot.
Cloverfield was a blast, and dont let anybody tell you something fell into the water the last scene of the film. It was a hoax, but bs rumors like this is great hype and buzz. Needs a sequel!
I have to go with Cloverfield, but not by as large a margin as many would expect. I understand many of you hate both, but do realize this style of filmaking will evolve, and marketing of Blair Witch especially was another fresh concept. Thats only a good thing.