Stand up desks are not a new idea. They have been around since the Victorian era.
Much has been written recently about the benefits of standing while working versus sitting. Standing is said to be better on one's back. Sitting at a desk all day can cause one to hunch over. Standing helps eliminate the tendency to hunch over while working. And standing has the added benefit of increasing one's metabolism.
Abraham Lincoln and Winston Churchill were both said to stand while working. More recently, Donald Rumsfeld often works at a standup desk.
Many modern standup desks are made out of aluminum and have an industrial look. Personally,I prefer a solid wood stand up desk, like the one pictured at the right.