Golden ratio and other design principles in page layout.

[George Treviranus]

Do any of you use really well known or old design principles in your layouts for an added effect? Which ones have you used/seen? Do you have any suggestions for others?

As an example, I'm in the process of redesigning my colleges newspaper and I ended up with a golden ratio for my centerpiece space as a default. Thought it was pretty neat. Granted, we are a biweekly tabloid, so it isn't like we will use that every issue. But it's a nice fall-back nonetheless.