Antec, maker of PC cases, cooling fans, power supplies, and other equipment for the Do It Yourselfer has released the Antec Performance CPU Cooler.  If you've built your own, then the name Antec should be familar to you.  Many DIY buffs (yours truly included) have used Antec cases in their first foray into system building, since they are readily available at big box stores like CompUSA, Circuit City, and Best Buy.  Many mom and pop system builders also use Antec components in their Build to Order systems.

The Antec Performance CPU Cooler is notable becuase it is designed for the thermally extreme AMD Athlon 64 FX and Socket 478 Intel Pentium processors.  Using copper heat pipes, a plethora of aluminum radiator fins, and a 70mm fan blowing horizontally, the CPU cooler can handle today's hot processors.  It's designed for AMD Athlon 64 Socket 754, 939, and 940 as well as Intel Socket 478 (including Core Duo), but not Intel LGA 775.  Even though you can't use it with Pentium D and Pentium EE processors, the other 5 sockets cover the majority of what's left.  I like horizontally oriented coolers, since they can channel air out along with the case fan or power supply fan.  The downside is the cooler takes up a lot oroom in the case, and you may need to check for clearance if you have tall memory like Corsair memory with LED lights.

After a quick websearch I found the CPU cooler at Radio Shack for $19.99.