The Change-Up. I guess everyone might have at some point might in their life have had this thought "I wish I had a life like him/her". The movie is based on this thought and the actors have played their part pretty well. So Jason Bateman (Dave) and Ryan Reynolds (Mitch) are close friends where Dave is very hardworking guy and Mitch is a carefree bachelor. At one night they both wish they had their friends life. And from the next day they get body swapped and then the story is how they get adapted to the other person's routine and how they feel about it. After interchanging their acting gets us like Jason mimics the same way how Ryan(Mitch) would have done in that situation like the dialogues and the physical actions which Ryan would have done and Ryan now being Dave acts like Jason it was fun to watch and at the same time its good to watch how both of them struggle to handle the situations they have been put into one others life. Jason(Dave) have told some things how he needs to have a day and after body swapping Ryan(Dave) lives a day like how he told. It's that the choices that we make shape us into what we are now. So when you think you could have been like that person, then for one day you can try to be like that person and see how it was. Mostly people might have felt like that because they wanted to do try some things but haven't done and when somebody else does that they had this thought occurred to them. There are some vulgar scenes in the movie so watch at your own discretion, other than that the movie is filled with plenty of humour to watch.