I took a video of my office set up in September 08 -
http://www.youtube.com/watch?v=pzJ--YN-i8g -- I need to do it again for another project I'm working on, so I'll update when I do... but that will show you my set up, it's changed very little, a little less messy!
Tom's office is one of the spare bedrooms, but I can't stand having all those walls around me. I work out of the dinette adjacent to the kitchen. It looks out over the backyard, so I can watch the kids on the playscape/pool and my bird feeders are back there too.