Joseph was one of the 5,000 lucky people who were selected to run in the Tokyo Marathon, and he decided to livestream his experience to all of the people who weren't so lucky as well as the rest of the world.
How's he going to do this? Using a jailbroken iPhone 3G running Qik, software that gives the iPhone livestreaming capabilities. His "modified hat" uses the strap and the "sponge of speed" to hold the iPhone screen-first against his forehead.
Qik.com will be showing the race from Joseph's head on Sunday / Saturday, and you can leave comments on iPhoning Japan to make his iPhone vibrate and let him know you're sending along your best wishes.
Joseph has a fun, tongue-in-cheek introductory video on his blog that explains it all in more detail. All of us here at TUAW will be watching and urging Joseph along to a fast finish in the Tokyo Marathon.