Maestro, that site was awesome! It brought you to a blog supposedly written by the character Peter, complaining about how horrible the character Sarah Marshall was! I did see the movie and it was hilarious, and the blog follows the first few minutes of the movie. It was a great teaser to get people in to see it, but I didn't feel tricked like I do by some of these other website commercials.
edit: Actually I think the URL I was thinking of was
http://www.ihatesarahmarshall.com