I am a huge fan of the flexible work schedule. Instead of negotiating a day to work from home, I let my schedule dictate the days and times I'm flexible. Not only do I work from home for a day, but I can also work from home in the morning to avoid commute traffic and drive into the office when traffic is clear. This alone saves me about 40-50 mins of drive time. What I then do is schedule phone work while in the car. I'm still productive.

To further follow-on the flexible workspaces, many days I come to the Cisco campus and work from various locations without ever going to my desk. I'm just as effective and efficient from any building because I can always find a place to work and be connected.