Acorn (original designers of the ARM CPU) used to sell an ARM platform called RiscPC. The case was quite cute - built on slices which clipped together, allowing you to configure any number of drive bays and expansions slots you wanted.

One Acorn bod built a Pizza Oven slice - a standard looking RiscPC slice until you opened the flap at the front and looked inside. It was lined top and bottom with Pentium processors, and some clever lighting made it look like they were glowing red - ready to cook some pizza.

I thought it was funny anyway.

Rob