Check out this neat open source resistor cutting robot that the folks at Oomlout built to make kitting resistors much easier.

We go through a lot of ribbons of resistors at oomlout. While we have gotten quite speedy slicing them with scissors we knew there had to be a better way. As a result, we decided to design a machine to help us out.

The current prototype takes an Arduino, a stepper motor, two RC servos, two exacto blades and a bundle of laser sliced 3mm MDF. It produces resistors strips of any length.

via Dangerous Prototypes

Also, be sure to check out the Solarbotics version, Mister Bitey (video below)!  I have no need for something like this, but I am certainly tempted to make one just for fun.  :)