Right now there are a total of five movie clips from The Host. I uploaded them all to our Youtube account, and hopefully you will all (even internationally) be able to watch them. If any more clips get released, I will add them and update the post as they become available for us to add to Youtube.
Update: Sixth clip added.
Update(3/19/2013): Seventh clip added
Sixth movie clip can be found here. It is not embeddable yet.
Source: Open Road Films