Thermalright's Ultra 120 Extreme has been the king of air coolers for quite some time now; just goes to show how hard it is for competitors in the market to go one better on the design.
Scythe however may have the answer. Dubbed the Orochi, a picture speaks a thousand words.
This cooler is an absolute beheamoth folks, boasting no less than 10 HUGE copper heatpipes, the cooler has dimensions of 120x194x155mm and weighs well over a Kg. A huge 140mm fan can be mounted on top of the heatsink, or vertically; this allowing for up to three of them working together. All sockets are supported (Intel P4 478/775 and AMD Athlon64 754/939/940/AM2/AM2+).
It's a little frightening to imagine that anyone would even attempt to mount this cooler vertically inside a typical PC chassis, that is if one even thinks they have a chance of getting it to FIT inside their enclosure, full server tower or not. At 1150g in weight, it's not exactly practical for most people. The amount of strain it would put on the motherboard; I dread to think.
Scythe in Japan have posted up details and pictures of the cooler here, but it hasn't yet been officially announced by the company worldwide. We'll be sure to bring you the press release once it pops up.