cwhummel:
how about this:
Virtuabotix is under construction
a breadboard arduino with 5v regulator for $9 plus $2 shipping.
How about this one:
http://www.aztecmcu.com/catalog/i136.html
A buck more and you get the breadboard, the wires and the right sized capacitors to boot. No regulator though, but they are only $0.50.