Just announced, June 6th 2012 will be World IPv6 Day.
...and this time they promise to leave it on afterwards!
Last year was a connect-a-thon. After 24-hours they unplugged everything and went home. Not this year. We can keep using it and work out the kinks.
In preparation I'm buying a new DOCSIS 3.0 Cable "modem" (Motorola SB6120 SURFboard) which has native support for IPv6. Comcast is listed as a supporter of IPv6 day, so I'm hoping to have native IPv6 to my house rather than my current 6to4 tunnel.
Show your inner dork. Get your running shoes on, this is the kind of thing that'll cause people to chase you down and beat you up.