I absolutely LOVED this movie.
Not quite as much as I loved Who's Afraid Of Virginia Woolf (imo, one of the best acted movies of all time, with Burton's performance rivaling DeNiro's in II for sheer force), but I loved it nonetheless.
I love when a movie shows on-the-surface normal people behaving badly . . . it begs me to ask myself if I, on my worst days, could behave similarly.
I thought that the film did an excellent job of showing intelligent, beautiful people who let their respective (and slightly varied) insecurities get the better of them.
Law's character's struggled principally with greed, Owen's thirsted for power and revenge, Roberts' was mired in guilt and Portman's was the classic case of a beautiful woman who looked in the mirror each day, saw a gorgeous energetic well-meaning young lady staring back and couldn't quite figure out why she wasn't good enough.
I found the dialogue to be excellent, and the acting to be fantastic (particularly Owen's).
3.7 stars out of 4.0 on the LL-O-Meter.
Best movie I've seen since 25th Hour.