Cloverfield

I liked it. It introduced the characters through a realistic party scene.

The camera man, during one scene, starts telling everybody at the party about how the female secondary had sex with another guy, which I thought was unrealistic. But it was interesting because it added a reason for their departure. This radical and unbelievable stunt was a 'could happen'.

It also had a 'mom call' scene which I enjoy. Mom calls him and he lies, telling her everything she wants to hear.