The Wii is a decent system, but if your a "hardcore gamer" then you'll be disappointed. I've had mine for several months, and rarely play it. Nintendo tried to sell it as a family console, and to attract people who don't consider themselves gamers. The games are fairly simple, with low time requirements. They are finally starting to branch out into the mainstream game market with deeper games for those of us who play COD4, Halo 3, Fallout, ect. I think that while they will eventually get to the point where there are games for every level of player, they will never reach the level of games that Microsoft (Xbox 360) and Sony (Playstation 3) have. And yes, I do have other systems (Xbox 360, PS2, PC), and have played the PS3 at a friends house, so that's what I'm basing my statements on. Both of the other major consoles have games for the new player as well as 100+ hour games for the upper level players. Currently, I just don't see that support with the Wii. Right now the only game that I play on the Wii is Smash Brothers, and that's only if I've got friends over.
So basically, it's a nice system, but it has some major flaws for hardcore gamers. If you can wait a few years, the next gen Wii (Wii HD) will be out sometime around 2011 or so. That one will feature HD output as well as DVD playing ability.
Also, a small side note on the browser that was mentioned earlier. It does work pretty well, and even plays videos from Youtube and other sites. However, if you don't mod your Wii you will end up having to pay for it. Personally, after shelling out the cash, it's not worth the money in my opinion. Just a side note......