Cloverfield! (Contains spoilers)

[Blacklight]

Oh great! I seen adds of this on TV few times and wonder to go see it or not.

Just one thing is it aliens they fighting or some creature/monster?

SPOILER OF THE PLOT and a mini review.

It's been getting very good reviews. It was really good.
Apparently, a group of people go to New York to party with a friend of theirs the night a giant Godzilla or something like it attacks the city. One of them has a cam-corder and is video taping the party. The whole story is told through the cam-corder so it's basically Blair Witch meets Godzilla. This means that there's the typical cam-corder shaky camera work, but not as stomach churning seasickening as in the Bourn movies.
The FX are really good, and you genuinely care about the characters. This is a movie that I would be willing to see again.