Check out these two game bundles:
Humble Indy Bundle 2: Pay whatever you want (if you pay more than $7.60 you get Humble Indy Bundle 1 as well!) has several great quality games which are all CROSS PLATFORM and DRM FREE! (Some of them from HIB1 went open source even!)
Braid, Cortex Command, Machinarium, Osmos, Revenge of the Titans, and for Humble Indy Bundle 1 (those who donate over $7.60 currently get these if you don’t already have them): World of Goo, Aquaria, Gish, Lugaru HD, Penumbra Overture, and Samorost 2.
Good deal for under $10, but I recommend giving more.
What’s even cooler is you can divide up how your donation should be spent between the groups and charities which I think is awesome. I plan on donating and helping the EFF because they fight for REAL internet freedom and free speech among other things.
This originally caught my eye on twitter as a post from CymonsGames linking to his blog article about the bundle. The games are by an indy developer who has won some retro remake awards it sounds like. They don’t seem as cool as the Humble Indy Bundle’s in quality, but it’s for a good cause (medical bills?) The games are also DRM free but PC only. Also, it’s a pay what you want kind of deal, so I recommend doing it!