$900? Holy shit with that money I would upgrade my computer with some new beefy parts

But yeah, I have a Wii and it's loads of fun with friends over (Brawl is great times... I rented Mario Soccer too and that was some seriously fun shit) and the fact that it can play GC games is really nice because there are a number of good GC games that sell for dirt cheap.
That said, a lot of games on the Wii are junk... unfortunately. There are a lot of shitty PS2 ports which is sad because the Wii can produce much better graphics than the PS2 (of course, it falls short compared to the 360 or PS3 buuuut).
But heh yeah if you're hellbent on getting a console I would say the Wii is a good option. It's kind of hard to recommend a console over another because the Wii, PS3, and 360 all have their strong points and it will all boil down to personal preference.