This a film released on 5th of June 2009 which is directed by Todd Phillips. This is a comedy film which can make you laugh from beginning to the end while keep your curiosity high. This film is about four friends who go to Las Vegas for a bachelor party and when they get up next morning they don't remember what happened last night and only this they get to know is the groom is missing. The story builds with their effort to find the groom and know what happened last night. 100% joy for sure and I'm sure you will not take your eyes off from the screen until it ends.