Sparkfun already has the OpenServo http://www.sparkfun.com/products/9014
Would be cool to have a version of http://www.01mech.com/supermodified as well.
For background see http://letsmakerobots.com/node/18615
The author posting under name AntonB has made some really cool stuff using these, see http://letsmakerobots.com/user/8101/pages
Also posted by Trossen http://blog.trossenrobotics.com/2010/05 … -bolt-sir/