Currently, a charity called the Humble Indie Bumble over at http://www.humblebundle.com/ are practically giving away five games, for however much the purchaser wants to pay for the games.  The proceeds of the sales go towards a charity, and the purchaser of the games is allowed to specify which charities he would like to donate to.  This is a good idea, and I suggest you all go buy the game pack.

On a sidenote, if we look at how much money people donated, and separate these people by the OS they use, Linux is by far the most willing to give.  A possible reason behind this is because Linux users normally dislike DRM.