This is a really well-crafted talk on creativity. In it, John Cleese cites academic research and his own personal experience to illustrate some very practical advice on how to become more creative.
I've been working recently on creating my own space/time oasis inspired by these ideas. To pay back a little I'd like to offer my notes as a quick-reference guide. I do this sometimes - it will give you a refresher on the talk without having to dive into a full transcript. Enjoy.