I picked up a Turbo Stick in a recent lot.  It definitely improves my game on shooters (and I need all the help I can get).  However, since it uses membrane contacts instead of micro switches, it feels like you're moving a spoon around in a bowl of oatmeal.  I dug out some micro switch joysticks and buttons from my arcade stuff.  If I have the right TTLs, this weekend I plan to try and hack together my own version.  StarDust4Ever, I love your attached photos.  The PiMame rocks!