Indie+Relief : All Revenue Will Go to Haiti on Jan 20.
I was a bit late to the game, so I'm not officially listed, but will be participating. All revenue (minus Apple's cut) from Humidor and MyGarden for January 20th will be given to Yéle Haiti, an organization created by musician Wyclef Jean to help Haiti's children.
Over 130 other developers are participating. If you need some software, go buy it now!