[AceJohnny2]

What's wrong with the Parallax Propeller? You can get a starter kit for $25 [1]. Granted, you used to have to program it in its own language, but C compilers are popping up [2]

[1] http://adafruit.com/products/791 [2] http://propeller.wikispaces.com/Programming+in+C+-+Catalina

[wtracy]

The Propeller doesn't have sixteen cores running at 2+ GHz with a gig of ram. The Propeller can't even run a real, modern OS.

[ErrantX]

The Propeller can't even run a real, modern OS

Well... technically neither can this :)

Although they do appear to have got it working really neatly with an ARM-based host board. Which is a step forward.