What a wonderful movie. Paul Rudd is terrific. He is truly the star. His performance is outstanding. The idiot is not Paul's character, Ned. He is a good-natured person who is willing to give everyone the benefit of the doubt. Rather, the idiots are his three pretentious sisters who treat Ned like a child, misinterpreting his honesty for immaturity. Ned maintains his integrity, which is in sharp contrast to the phoniness that he encounters in others. Misunderstandings occur as Ned forces his sisters to confront their own lies. Ned is perceived as the family problem when in fact he is the solution, except no one knows it, at first. Several scenes are amusing as Ned's good nature and candid outlook produces some awkward situations. This movie succeeds because it tells a story, does so with humor, and keeps the audience engaged.
