I found Meg Ryan to be wonderful in this film (her performance almost worth the price of admission by itself), and there are some nice comic moments from Olympia Dukakis, but, while there are some truths spoken here, much of it comes from an unbelievable source, so losses its potency.
Brody's charactor is totally out of whack, at 26 he's much too wise for his age; his pearls of wisdom running very contrary to the fish out of water persona he enacts through the first half of the film. The film wants him to seem bewildered and out of touch with his life, yet he then suddenly knows exactly how to handle the situation with both daughters, as well as giving Meg the friendship and "real life" that she so desperately needed at the time.
In the end, the film didn't fool me, or move me - was waaaay too contrived to be anything more than a diversion. Too bad, for Ryan's performance was a study in repression with the occasional eruption of life.