Wii Homebrew Channel," which installs a Twilight Hack-enabled software loader as a channel on the Wii Menu. You still need to perform the Twilight Hack once in order to get the Homebrew Channel software into the menu in the first place, but after that, you're free from Twilight Princess. This is a totally huge step toward simple, everyday homebrew on the Wii!
At least, it will be, eventually. Unfortunately, the version that has been released is a ten-minute demo. After the allotted time, the software stops working and cannot be reinstalled. So much for unrestricted access to the Wii hardware.
[Via DCEmu; thanks, craig!]