I've worked in three companies that had lots of people and lots of cubes, and I spent the entire day walking around. I figured that was my job. The days where I sat down and did what looked like work were my least effective days. It's hard for me to see why you'd bother having someone come all the way to an office just to sit in a cube and type.
The new rule seems to be that if you're going to spend the time and the money to see someone face to face, be in their face. Interact or stay home!
I struggle interacting with people sometimes at work. I tend to be rather task-oriented, so I like to stay in my office and accomplish stuff. I have to remind myself everyday to float around to other people's offices to interact. Love this post by Seth Godin on how important relationships are. Love this part: