One of the interesting things is that you can extend the loop to your graphics card(s). The HydroJet looks pretty impressive and we'd love to find out if it can really keep your processor along with two graphics cards cool.
OCZ has signed an initial order for 5,000 pieces with WayTronX. WayTronX does not product the product themselves but is a pure technology company that engineers and develops a product and licenses it to other companies.Another interesting product is the massive WayTronX Radeon HD 3870 Cooler which fills four or five slots:
he unit below cools a ATI Radeon HD 3870. It is quite massive, but allows for very low temperatures in a closed and completely isolated cooling system. The entire unit is powered through a Molex connector, plugged into the power supply. This is necessary because the fan control output on the graphics card changes the output voltage, but the pump needs a constant 12V supply for operation.
More at Techpowerup.