I downloaded Zelda, Sonic, Donkey Kong and Super Mario 64, all of those except Mario 64 can be played with the Wii-mote, for Mario you need to connect a Gamecube Controller. But it's lots of fun and they run really great.

I think it's a really good idea by Nintendo to offer these games for download, and not only limited to their older systems. Feels nice to be able to play Sonic on it too.
Even if they don't give them for free....

The only game that stopped my retro-euphoria on the Wii at the Moment is Zelda: Twilight Princess. I can't stop playing! Well... i've been waiting to play it for long enough after all! hehe