Lots of negative reviews about how this movie is vulgar, has been done before, is even too long. I found this an enormously entertaining film, mostly because the acting is just so on point. Jason Bateman and Ryan Reynolds manage to make the "change-up" so completely real that you even begin to buy into the theme behind the plot (Mitch's growing up/Dave's becoming more appreciative of wife and family). I saw the R-rated moments for what they are--Adult! And those ironic moments where the inhabited character reacts so differently (Cara's ballet sequence is hilarious) propel the comedy to another level. The supporting cast is just as talented, Leslie Mann, Olivia Wilde, and Alan Arkin all have sterling moments!

One can argue thematic lessons here, but this film is filled with sharp, funny dialogue and produces a satisfying ending. If you're averse to nudity and the f-word, avoid. Otherwise, enjoy the acting.