Pay what you want for video games.

No, it's okay, you read that right. The humble indie bundle is 5 awesome games for whatever price you want to pay.

http://www.wolfire.com/humble

It's worth it just for world of goo. Seriously, I highly recommend it.

Oh, and Mr. Google, they're for linux too. (i386 architecture naturally)

Update on the Humble Indie Bundle.

There are now six games included, literally the best deal in video game history.

Here's the list:

World of Goo (a personal favorite)
http://www.worldofgoo.com/

Aquaria
http://www.bit-blot.com/aquaria/index.html

Gish
http://www.chroniclogic.com/gish.htm

Lugaru HD (bunnies with knives XD)
http://www.wolfire.com/lugaru

Penumbra Overture (Hands down the scariest game I've played)
http://www.penumbragame.com/

And now included Samorost 2
http://www.amanita-design.net/samorost-2/