Ultra Products ChillTec Thermo Electric CPU Cooler
 

Good for those extreme overclocks or just a gimmick, this TEC powered CPU Cooler shares designs with the MACS and Amanda TEC CPU Coolers:

"The Ultra Products ChillTec Thermo Electric CPU Cooler is the first Peltier cooler I have ever used and I have to admit I am impressed by how well it works! Receiving an almost ten degrees Celsius drop in load temperatures can help to prolong the life of a processor, and can be a great asset while overclocking.

http://www.bigbruin.com/2007/ultratec_1