[Kong]

[ame=http://en.wikipedia.org/wiki/Homebrew_Channel]Homebrew Channel - Wikipedia, the free encyclopedia[/ame]
Wikipedia says Nintendo has and will brick your Wii if they find out you are using a region hack. If they find out you are using the Homebrew channel they will void your warranty but can not legally brick you just for using the channel. If they know you are using it to pirate games (which I don't think they can know) then they can legally brick you.