Saw one (and only one in all this time) on the road and it just captures your attention. The stance with the high rear end sloping to a sporty front end just makes you gawk. Not bad. In pictures, it's bad because it does not have that same dramatic effect in 2D from a still angle. Try not going "wow" when you see one in person. Practicality-wise... it's only a 4-seater as the rear has a center console. The trunk is small as a sedan anyway. The only people who buy this are the ones who want to be different. Seriously. But I have no problem with that either. I'll take my X5 anyday though - I have been in love with the look since its redesign in late '06. Too bad those mofos wouldn't give it the twin turbo I6 like they did for the X6.
BTW, the X3 is getting a major redesign for 2010 and it'll be much improved... it is definitely the worst of the 3 right now.