While not exaclty a virus remember the fake "softmod" which used a jpeg to boot copied games? It got so much attention because something like that could be possible.
tgjester7: Personally I would be more worried about an update from Nintendo screwing up the system than a virus
Like mentioned above, a virus needs to specifically designed for the Wii in-order for it to have any affect. I highly doubt anyone will bother with it since most current viruses are too busy targeting Microsoft. :lol: