Geohot the famous iPhone Hacker has announced the untethered jailbreak for the iPhone 3GS, iPod touch 2G, 3G, and even the upcoming iPad.
From his blog
I believe it meets the requirements for a good video.The jailbreak is all software based, and is as simple to use as blackra1n. It is completely untethered, works on all current tethered models(ipt2, 3gs, ipt3), and will probably work on iPad too.
Don’t ask about a release date. You won’t make it happen any sooner.
We will surely keep you updated as this develops.!