I don't own a DS, but from the looks of it, turn based gaming is alive and well on that platform. It'd be cool to see a come back of old school RPGs on handhelds, or as cheap digital download games.
I'm a little disappointed in the Wii. I grew up with Nintendo and was hoping for something spectacular, and the wii-mote concept seems like a bit of a gimmick to me. The best wii titles are pretty fun, but there's hardly anything worth playing on that platform and developers seem to be forced to try make games around the controller, which is fairly limited in what it can do.
Battle Chess DS has a nice ring to it.