http://www.raspberrypi.org/
New education-targeted Linux box computer said to be released by the end of November 2011 will cost roughly $25 dollars for Model A and $35 for Model B. the size of a credit card, the Raspberry Pi, as it's been affectionately dubbed, is the next generation in cheap educational purpose hardware available to the public. The Raspberry Pi was designed with Linux based education and cheap computing technology in mind, but the small computer is also able to run Quake 3 at a 1080 resolution. (With an average 30FPS.)
I don't know about you guys, but I'm stupidly excited over something like this. It runs Ubuntu! ^^