Not yet as I am looking into the ASIC units soon to be available, I feel those may be a better ROI than building a rig at this point...an old gaming computer in my lab serves a my miner currently; not very fast but close to "free" electricity (solar + wind).
Oh same here, my brother has a server farm that he is upgrading to ASIC machines whenever they release it. Which vendor will you be buying from?
I hear you wont have to worry much about power consumption with these new chips so that solar and wind power setup sounds nice!