VFD or other tube based indicators and clocks always look great. Akafugu has polished his IV-18 8 digit based VFD clock which also comes as kit that can be assembled without a drop of solder.
Clock is based on LPC1347 ARM Cortex -M3 microcontroller. It comes in two options, with or without GPS. The clock has all basic features you would expect including battery backup, alarm, optional GPS which is used to set time automatically, seconds can be counted with four different letter words. Project is based on open source firmware which can be hacked with your specific needs since there is plenty of memory and processing power left. Source is developed with mbed online ide and compiler.