Trandi blogged about his Stepper motor bluetooth serial driver project:
How to put together a simple bluetooth driver for a nice little stepper motor (Mitsumi M35SP-11HPK) that I salvaged from an old Canon printer.
It uses a small Attiny85 (the more I use them the more I love them ! :) ) programmed in Arduino, a L293D H bridge, a few discrete components and a bluetooth to serial adapter
Check out the video after the break.