Many good points so far however I don't think anyone should underestimate the power of the "Switch B**ch".
In my experience getting to know and be on good terms with the secretary of a company can be invaluable towards becoming top of the resume pile.
These office workers have often been with the company for eons and their opinions count when deciding on future employees. After all you'll probably be dealing with them every day at work.
I'm not saying that being in sweet with the sercretary alone will guarantee a job but every little bit helps.
I'm also not suggesting that anyone should go above and beyond the call of duty to make any office lady happy.