The Humble Indie Bundle 4 is easily the best bundle yet, and now they've added soundtracks to the already stellar games that are included. The bundle includes Super Meat Boy, Shank, Bit.Trip Runner, Nightsky, and Jamestown, plus Cave Story Plus and Gratuitous Space Battles if you pay more than the average (it's like $5, come on).
Each of those is an indie classic in its own right—plus you can choose where the money goes (to the developers, to the bundle itself, so they can do more bundles in the future, or to charity). And the games are available for Windows, Mac and Linux completely DRM-free. Does it get any better than that?