Every CD in every agency on the planet should read; 'Where Good Ideas Come From: The Natural History of Innovation' (video)
'CHANCE FAVORS THE CONNECTED MIND'
This is unquestionably the best book I've read about creativity - and the systematization of it within businesses such as creative agencies - that I've read for a long time.
Read one way, it's a guidebook for the re-configuration of the agency.
One for the Amazon Wish List. Maybe CEOs could treat their ECDs to a copy for Christmas . . .