Research for book: How do you balance resources?

Over the past few years I have certainly done my share of pontificating on how to balance staff resources against what seems like unlimited demand from projects (and other quarters). But when the rubber meets the road, we all have to find a way to make it work.

 All that pontificating and consulting has lead to a request to write a chapter in an upcoming book on this very subject. But before I blindly write based on my experience (and that of my clients), I want to listen.  What works for you? How do you really manage your resource loads? What techniques do you use to attempt to get all the work done without burning out your people?

 You may reply to me privately, or share you thoughts in this blog post. And who knows, you may be quoted in the book (with your permission, of course)