That Josh is high alright. Think about it – Do you think Netflix would work on the Wii if it was just wireless B? Any video at all over wireless B?
I’ve read plenty over the last year about the Wii only liking ‘mixed’ mode with some routers so you could be on the right path there. You should also see if you have any other devices on the network that could be interfering. Neighbours maybe or some household item interfering on the 2.4 Ghz frequency? How far apart are the Wii and router? Maybe a wireless N device connecting and kicking off the Wii (usually wireless routers only can do one at a time – G or N). It may not even be an ‘N’ device – I once had a Vista desktop connected via wireless G and the Wii could never connect if the Vista box was already on the network. Disconnect the Vista and bang the Wii was off and running. Could never figure that one out – no IP conflicts or anything but the Vista box kept blocking.