Corporate Culture: best two documents, Ever

What Is Corporate Culture?

Corporate culture refers to the beliefs and behaviors that determine how a company's employees and management interact and handle outside business transactions. Often, corporate culture is implied, not expressly defined, and develops organically over time from the cumulative traits of the people the company hires. A company's culture will be reflected in its dress code, business hours, office setup, employee benefits, turnover, hiring decisions, treatment of clients, client satisfaction, and every other aspect of operations. 

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It has been called the best document to come out of Silicon Valley, ever, by Sheryl Sandberg, Facebook COO. Here is the description of the corporate culture at Netflix in an old SlideShare. The current corporate culture document is on the Netflix jobs page.  It's excellent!  Here's another:

Probably the next best document on this subject is the Handbook for New Employees at VALVe software.  These guys set the bar at a high level.