This image was lost some time after publication, but you can still view it here.

Zalman has teamed up with some British Aerospace wind tunnel engineers to design this, the Big Boy Turbo Mega Fan 2. It requires an absurd 1400W of power and the included documentation even gives instructions on how to daisy chain power supplies to properly feed this beast. If you squint hard enough you can see a size comparison to a pack of delicious menthol cigarettes.

World's Largest CPU Cooler [OhGizmo!]