Tools to Improve Thinking

I'm collecting different books, ebooks and software that help improve the way we think. I like reading de Bono (Lateral Thinking) and Buzan (Mind Mapping). I sometimes use some of their principles in teaching and every day life.

Here's the list, so far. Please send me a comment to add things from your personal collection:

• Wired Article: Forget Brain Age: Researchers Develop Software That Makes You Smarter. The Wired Article is not updated: the BrainTwister software is now available online, but for a price.
• Software for the Brain (a book). The author co-developed the School of Thinking with Edward de Bono. The book contains short, daily lessons to improve the way we think. (Free download) or See the book at Amazon. Here's an interview of the author to see how the technique works.
• The Brain that Changes Itself - documents experiments showing that the brain can be rewired and there is something true about the power of positive thinking. See the book at Amazon.
  Visit the book's website.