I think the Wii has more "keeper" games than any other system (I have traded back most games on my other systems), but you can still end up with stinkers if you buy on impulse. Also, multiplatform games are often better on the other platforms unless the wiimote function makes a big difference (in Tiger Woods Golf, for example).
- Super Mario Galaxy is probably the best game of all time.
- Mario Kart is an excellent pickup.
- Super Smash Brothers is also a lot of fun if you have people to play with (alone is not much fun).
- Zelda: Twilight Princess is solid (but can drag if you go for a complete win).
- I think the price is right on the zapper w/ crossbow training, and recommend it.
- Wii Fit is also a lot of fun if you can find it.
- I really like Tiger Woods 2008
- Trauma Center games are also fun
A couple things I don't recommend:
- Marvel Alliance: the graphics and controls are superior on the other systems, and still aren't very good. Online multiplayer might redeem it (marginally) on the other systems, but on the Wii there is no voice support yet (coming holiday 2008)
- Mario Party 8: the mini games make mediocre use of the wiimote controls, and the way they are framed in the larger board game-style platform is obnoxious. Kids might like it.
I'm torn on Ravin Rabbids. I loved the first one initially, but the novelty wore off. It had a lot of fun games, but not enough supported 4 players simultaneously. The sequel had more 4-player support, but the games were kind of rubbish. The upcoming version uses the balance board and looks like it goes back to more solitary games.
Uhm, that's it, really. Thanks to Gamespot.com and some other websites I've avoided most of the stinkers.