I've always been into Mario Kart, but not huge or anything. The DS version looked fun and I figured I'd get around to playing it eventually... but then I started reading into the Wi-Fi stuff. Even if it is limited and feels like your just being processed (take all players, grab them by the four, put them together, and send them off) it still sounds like fun.
And it's a new innovation for gaming, which I can't stand not being able to check out.
The idea of being able to kill an hour between classes at the university sounds absolutely perfect.
And we'll still be able to establish a "Friends List" online by listing our given names/numbers.
For anyone considering buying the Nintendo USB adapter, seriously look into buying a standard Wireless Router. It will do all of the same things as the Nintendo one, plus allow you to do much more in the way of networking. You can get a really decent one for only a bit more. Personally, I'm going to pick up the
Linksys (WRT54G) that's on sale at Circuit City. Awesome router, totally compatible with the DS (even listed specifically on the Nintendo Compatablity List) and you can even flash the bios on it to get it to do some really interesting stuff.