Wowzers, now that is a cool looking mainboard for sure. Some user over at the xtreme systems forums posted photo's of the up and coming Gigabyte EX58-Extreme mainboard, obviously for Intel nehalem, i7. You are looking at a non final v0.2 sample.
Notice that there are waterblocks on there at the Northbridge location (X58 chip), leading to the mosfets.
That is looking impressive for sure.