How much would you pay for a copy of World of Goo, Gish and three additional games that don't prominently feature black blobs dripping with indie cred? Thanks to the Humble Indie Bundle you pay exactly "whatever".
Wolfire is offering a five-game bundle that includes Aquaria, Penumbra: Overture, Lugaru, Gish and World of Goo at a pay-what-you-want rate. These cross-platform games are DRM-free and run on Mac, Windows and Linux, so no one need complain. (OK, OS/2 users, you can complain about being left out.)
In addition to letting indie game enthusiasts name their price, Wolfire and the participating indie acts are letting buyers send their contribution directly to charity, Penny Arcade's Child's Play and the Electronic Frontier Foundation, specifically. Give it all to charity, divvy it up evenly, whatever!
The fun and the good vibes from doing good are free, so be hasty with the purchase.
The Humble Indie Bundle [Wolfire]