Of course, you have to be a certain type of player to enjoy it. But I'll honestly say that I did have quite a bit fun with it during my playthrough. Best thing to do is play it in short spurts. Otherwise... you'll hate it. I still think the Z pool table rules, meh.
http://www.gamespot.com/wii/sports/lunarball/review.html
That link says "Lunarball"...!?