I'm not entirely sure how I missed this one, and I'm pretty sure I don't remember it being posted here, so I thought I'd share.
http://www.youtube.com/watch?v=zRwPSFpLX8I
It's definitely not your standard data center (kind of expected, with Google), but if I had to imagine a Google data center prior to this video, I'd probably end up at the opposite end of the spectrum. Shipping containers as a server housing? Hell their servers don't even really have a chassis - just a tray panel with a motherboard and some mounted components. Very interesting stuff.