It doesn’t look like much, but 5 people logged an extra 75 hours in a month, with the vast majority of those extra hours being productive development or design hours (about 63 extra dev/design hours were logged in the working from home month).
At posterous we are doing 3 day a week in-the-office, 2 days from home. Less interruptions = way more coding time. I pulled an all-nighter and got some gnarly architecture work done yesterday that there is NO way I could have gotten done in such a small amount of time if I knew I had to live on a normal schedule and get into the office the next day!