What makes this movie so good and unique is that everything we see is trough the eyes of a single videocamera. This makes the story oddly believable. The work to make this movie look authentic is also amazing, and the special effects are top notch. You really get the feeling that New York is under heavy attack. The only downside is the rather annoying guy that is holding the camera. I also liked the opening where we are fooled to believe that the tape was found, just like in the Blair Witch Project. I give this movie a 9/10 after the third time I watch it.