Volunteer! Volunteering is awesome. You and your company can go out and do something together with a purpose. It's good to get away from work for a bit, but even better if you're all helping the community out with your time and effort.<p>I'd highly recommend it. It's so much fun and very rewarding. Many times it is also very humbling.
I'd recommend doing sports. For me it is endurance like (road-)bike, mountainbike and running, but I guess everything else that gets your body in motion is a good contrast/antidote to sitting in the office in front of a Computer.