Just as the topic says this is great news. We will now be able to run any program we'd like in full Wii mode! Modchips aren't even required.
The video is from the 24th Chaos Communication Congress in Berlin where two hackers (Michael Steil and Felix Domke) show how they can use the extracted keys.
I can't take credit for finding the information though as it has been posted on many blogs. Either way enjoy