100% selfmade - 25 standard cyan/green LEDs with selfetced PCB and ATiny2313 (now ATMEGA8) Controller - Software made with Bascom AVR
take a look at ledstyles.de
I visited Tokyo in '03 and of cause I had to try fugu. Nice restaurant btw - up the street in Shibuya next to the gas station at the corner - can't miss it, it has a giant fugu-head as restaurant-front.