[quote name='lilboo']These game channels, IMO, are a brilliant idea. For Mario Kart, if you just want to add a friend you can just quickly go in and do so. Not sure exatcly what the Wii Fit channel
benefistbenefits..but I still find these channels pretty cool. I see no reason why Brawl couldn't have one
But then, when you want to download a game, it just seems smart to get rid of these first

[/QUOTE]
The Wii Fit channel lets you take the Body Test without having the disc inserted, I believe. I tried it out last night, but didn't remove the disc to really test it. It basically drops you in the Wii Fit Plaza. I clicked on "Training" and I think it streamed right to the disc. I imagine it'll prompt for the disc if not just have the button greyed out.
It also has a scrolling marquee telling you when your Mii last took the test.
And this is sort of on-topic, RE: channels: I wish that the scrolling marquees would be present on the channel when you open it up, like the News Channel does, I think. Often times the thumbnail image they provide in the Wii Shop Channel is too small for me to make out or the text in the Nintendo Channel is too long to read easily.