Ten minutes into this one, and I had had enough. Half an hour in, my wife and I were in stitches. The joke - it is a one-joke film, and so what - is that somehow, magically, the two estranged lovers exchange bodies. Each has to cope with the other's job and the demands on the opposite sex, and, of course, each develops a new understanding and appreciation of the other. There are predictable situations (his first experience of PMT, her first erection, their first sexual experiences in their new bodies, difficulties with how to treat work colleagues), but they are funny, and exceptionally well acted. Guy Pearce ("LA Confidential") as a woman with a man's body, minces as he did in "Priscilla, Queen of the Desert", and his opposite number, Claudia Karvan, catches assertive male body language beautifully. At times, the joke seems a little over-extended, but it is good-hearted and good fun.