When we go to the Detroit show, seems like every manufacturer has BEAUTIFUL cut-a-way engines. They usually chrome everything and put it under bright lights. Everything turns and when the valves open on the intake stroke, blue leds light up the combustion chamber. Then on the exhaust stroke, they turn red as the exhaust valve opens. They are pretty impressive.
I've even seen those CVT transmissions cut down, which look pretty crazy.
I've got pictures somewhere...