Zignon

Buy.com has it for 18.99 w/ free shipping after rebate. Could be worth it for those who have it in an enclosed area. I have used this since the beginning even though it is in a well ventilated area. Spent too much money on the thing to risk it dying and shipping back to MSFT.

http://www.buy.com/prod/Antec_Notebook_Cooler_Use_For_Power_2X70MM_DBB_Fan_Aluminum_Surface/q/loc/101/10358545.html