Overall I find this game very enjoyable. Rockstar really went to great lengths to create a realistic (as much as a video game can) table tennis game. Single player is okay, but where the game shines is in two people playing eachother.
Good: Graphics are nice and smooth. No framerate issue even when throwing down in a fast paced match. The Wii controls are great, if not awesome. There are several different control modes, coming down to if you want to use just the Wiimote or the Wiimote and the nunchuk together, both of which offer excellent shot control, spin control, and power control. This really is a great game for two people play together. My wife and I have running battles now to see who is the best. Also, something else Rockstar took advantage of is the speaker in the Wiimote, which if you have ever played table tennis before you will be surprised to hear how perfectly the Wiimote sounds just like a "whooshing" paddle.
Bad: Single player is a bit weak, not very many opponents.