the Wii is a great party console imo. Whenever I have people over, we are almost always downstairs, playing Wii Sports.
It is also really great if you are trying to break a girlfriend into gaming. It's an easy transition since she doesn't really feel like she is playing a game, since it is very life like.
Just what I have seen anyways. It makes the sports games very competitive, even with someone who has never played videogames before.
All that said, PC>consoles for gamers.