Google made a video tour inside their premises. Looks like an amazing wire-n-hardware gathering:

Oh, I wish we could rent this mass of metal for password cracking purposes! In that case, however, water cooling system would not be enough to chill all our graphic cards. Better to think of a way for heat-utilization, like channeling hot water to the nearest residential neighbourhood and  “use it as heating source for buildings in the area” as suggested by Anonymous in Seth H. Weintraub’s blog, or at least open Russian bath near it :).