http://www.armchaircommentary.com/2011/10/amazon-goes-to-pix...
"Main Building
The Pixar campus opened in 2000. It was built on the location of an old canning factory and the factory vibe inspired the architecture. Steve Jobs, one of the Pixar founders was heavily involved in the design. He wanted Pixar's main building to serve as a central gathering place where employees would come several times a day to interact and share ideas. In service of this goal a cafeteria, coffee shop and the employee mail room were clustered within steps of each other within the atrium of the main building. Pixar lore is that Jobs was so obsessed with the idea of all employees venturing to this area at least once a day that he advocated for only having one bathroom on the campus. He was overruled."
http://movies.netflix.com/WiMovie/The_Pixar_Story/70083532?t...
After that, read the Malcolm Gladwell article how her findings can be applied to office culture. http://www.gladwell.com/2000/2000_12_11_a_working.html
After all that, apply all that to offices you've seen.