HP LaserJet control panel hooked up to an Arduino:
This has been done before here: http://hackaday.com/2009/07/20/touchpad-and-vfd-hacking/
but the links to the details are dead so there seemed to be a good excuse to do it again. I haven't seen anyone demo the buttons and LEDs before either. The board isn't really very practical to reuse but it was fun to mess around with. I believe the M66004 VFD driver IC is also used in some Hi-Fi equipment also.
Library, sketch and other details are available here: http://arduino.cc/playground/Main/M66004Vfd