SPOILERZ ZOMG
YOU WERE WARNED
Heres what the closest drawing to what the monster looks like: 
Heres all the spoilers, enjoy
http://www.rottentomatoes.com/vine/...71&page=1&pp=30
Here are the juicy bits if you dont want to read.
Its 80 minutes long.
If you want an explanation on the monster's origin, you wont get one, sorry.
No Chtulu, Mothra, Voltron, Godzilla, Mega Zord, Poke'mon, or any other monster related things are in the movie.
You do get to see the monster fully, but not for very long, most of the movie you just hear it or see bits and pieces... as its ginormous
It shakes off and drops crab like creatures that look like Zerg or the bugs from Starship Troopers. They bite people and they later inflate and explode as almost seen in the trailer.
The monster does eat people, including one of the main characters.
All the main characters die, there is what is believed to be a nuclear explosion at the end that kills off the two surviving characters and possibly Cloverfield, you never see the monster die.
If you have motion sickness, you will most likely vomit, lots of shakey cam.
