Someone crammed a Mac Mini into an NES case. And the NES case isn't just about looking good, you can still plug NES controllers into the front ports and use them for emulator games. Inside the case you will find a Mac Mini, a DVD writer and an IDE to USB 2.0 circuit.
The creator of the case mod drilled a hole so you can still see the white indicator light next to the power button.

Mac Mini Inside a NES! [Frozen Vomit Sculpture]