While we're on the topic of Homebrew, I recently applied the Bannerbomb hack to my Wii. I still haven't figured out how to
Spoiler
play downloaded games
on it, but it's very nice to be able to transfer avi movies from my computer to the SD card and play them on the Wii.
If anyone's interested, I wrote an article on how to get Homebrew on your wii on
wikiHow.