I am afraid I have to disagree with some of you.
Yes, this game is very cool, and a concept which just rocks, however the Live is severely lacking.
I am over one side of the table, anticipating the ball (which is coming towards me) and just as my man goes to make a shot, the ball appears on the other side of the table and the opponent is running around wildly.
Sooooooooooo much lag. Still, this isn't the only game affected. I have to say, it's leagues ahead of any EA games that I have played. NFS:MW had me ending up in walls at incredibly random times.
Summary: Great game, fantastic idea, but you have to have real life friends to make it playable (even the girls are keen on this, its so easy) With a few beers and whatnot, it makes for a great fun night!