the break up be not funny . it be market a a comedy and but it certainly isn not . the constant arguing between the two lead character and their childish attempt to get back at one another be not entertain . unfortunately and this be pretty much all there be to the movie . we never get to see what it be that they like about one another . what do they have in common . why be they attract to one another in the first place . why do they fall in love . these question remain unanswered and a a result i find that i do not actually care whether they break up or not . the only interesting part of the movie for me come courtesy of the excellent support cast ( all of whom be under use ) . johnny o ( john favreau ) and riggleman ( jason bateman ) and marilyn dean ( judy davis ) be the only character i actually like . favreau be of course very funny a always and but only have a handful of scene and and his knack for comedy be largely wasted . i would also like to have see more of talented arrest development star bateman . he have remarkable comic timing and a strong screen presence which could have really add to this film . but and unfortunately and the focus be squarely on aniston and vaughn and who fail to make their character interest or even likable . i really want to like this movie and but i do not really enjoy it .