OCZ presented an exciting new cooler at CeBIT. Their new HydroJet is the first CPU cooler with a carbon-based core, the HydroJet features a mix of liquid and air cooling and promises extreme cooling performance.
Whilst the carbon core is an unknown quantity at this time the 100% self contained liquid cooling system mixed in with a double-pass air cooling does seems to be impressive, on paper at least.
The air is drawn in over the cone on the top by a silent fan in the base of the cooler which then routes the air back up the heat sinks exiting through the vents on the outer edge of the cooler.
More info at Hexus. The sample shown at CeBIT was handmade, OCZ expects retail units will be ready within a few months.