We've all been in plenty of data centers, but many haven't and they will get excited seeing these pictures inside google.
You can see these pictures at this url http://www.google.com/green/storyofsend/desktop/#/clear-instructions/overlay/inside-networking
Google's servers are here. http://www.google.com/green/storyofsend/desktop/#/hard-working-machines/overlay/our-servers