[(B - A) x 1000%] + (G/LotR) + H = C
In other words: Blair Witch Project minus annoying characters and lame "ad libbed dialogue"and then multiplied by about 1000% good filmmaking, added to Godzilla divided by Lord of the Rings style monsters, plus some real heart equals Cloverfield.
Ah, it's late. How about this:
Cloverfield = Awesome
PS -- Stick around for the credits. NOT because of the back-masking message at the end, but to hear the bombastic "Cloverfield Overture", that harkens back to the original Godzilla theme music and classic B-movies.