A few people have written in about this cooler... which is funny because we made essentially the same heatsink here, about 12 years ago.
"The CompTake "Chimney" uses 48 hollow pipes positioned directly atop the CPU, creating a huge amount of surface area, transferring the heat produced by the CPU directly into the air. This principle of passive cooling is nothing new, but we haven't seen a take this wonderful looking—48 pipes!—in a while. And while it'll probably be locked in your tower, out of sight, any true PC nerd takes pleasure knowing it's inside there, piping hot air. Tweakers says the Chimney will be able to cool chips as powerful as Intel's Core i7-930, but will still need a fan somewhere in the rig just to keep air flowing. A small compromise."
And here's the heatsink Frostytech made sometime in 1999, if my memory serves. This bad boy was fun to make, failed badly due to loose swage joints though.
Made by Frostytech.com