The DS's a different case though, it's line up is fucking brilliant, it deserves every praise it gets.
I can see how more simple and entertaining games like those in the Wii are bringing new people into gaming but I think the majoraty is still probably going to be playing Guitar Hero or Wii Fit until they get bored and don't even play anymore. I see this new involvement in gaming becoming more of an ilusion, rather that the actual increase of people who are really into what games can truly represent. If I were to start gaming right now, I would actually be turned off by most games on the Wii but then again I probably would feel the same way if I got into some hardcore JRPGs or stuff like that, there is a middle ground to this though. Games that manage to combine good writting, a good storyline and fun gameplay, all wrapped up in a simple way, games like Okami for example. This is the stuff I'd like to see new gamers getting excited about.
I don't plan to start any "Are games art?" or whatever shitty argument like that but I truly do not see games as toys anymore, the way they can trigger emotions, the way they can have incredibly well thought out and engaging mechanics, I just can't see it as a toy.