Apple Powermac LED Clock Hack.
Those punched holes in the front of the Apple G5 Powermac's aluminum case just happen to be the perfect size to hold standard-issue LEDs. Swedish hacker Anders Lundberg built his own LED clock that fits right in the bottom, and I think it's sort of swell.
Can you think how rad it would be if the entire front panel was one giant LED array? (Thanks, Hammond!)
Project Page [PaulAnders] [Gizmodo]