It's very blurry and pixelated. I know the Wii isn't known for it's graphics anyway, but I feel they were much much better on my standard TV I had before I switched to a HD one. Also the dark colours (grey, black) appear patchy. I don't think it's a problem with my TV as my PS3 and 360 work fine (appart from some framerate issues

)
Only thing that looks bad is Wii unfortunatly because I have alot of unfinished titles on there.
Even my upscaled DVD's on the PS3 look fantastic.
And yeah I've changed it to 480p. There was no enhancement in the picture since doing so, as I heard 480p only makes moving images better.
It's really frustrating.
I heard somewhere ages ago about a box being released by a 3rd party company that upscales the Wii to 720p but retailed about £200. I can't find anything about it again.