^The first games that will be online are Pokemon, Metirod and Mario Strikers 2 I think the first online will be out in May and unlike the 360 online games will be free.
Nintendo says we'll get a channel for online games later. They promised to release such information in March 2007. Later on we'll see games like Super Smash Brothers Brawl online. Nintendo even hinted Mario Kart Online. But they didn't hint if it was Mario Kart 64 or a possible Mario Kart Wii. With VC it's possible to host those games online multiplayer using the Wii. The technology is there, the rest is up to Nintendo.