This image was lost some time after publication, but you can still view it here.

You can watercool a hot rig, or you can go for the biggest fan/heatsink CPU combo I've ever seen. The copper block transfers heat to the aluminum fins via 6 heatpipes. The aluminum radiator is cooled by dual 12 CM fans that have the added effect of chilling out the motherboard and anything else in your case.

Also, this is one of the main components in a hovercar.

CPU Heatsink [Via Thrasher]