(Scratches head in vain) I had to look this one up and after reading the IMDB plot summary I understand less about this movie now than I did before I knew it existed.
mate your not missing out on much by not watching this movie lol. the trailer as shown in our movie trailers section makes it look like a really cool, bloody type movie but its not. well i wouldnt say not to watch it, but at the very end when you find out why everything happened, you think wtf lol. i cant give the movie away but, one part that became very annoying was Amy (Christine Taylor) screaming every 5 seconds after entering the hospital.
I must say the movie keeps you watching it, but yeah, at the end im sure its a movie most will never watch again.