Think Aloud Protocol (TAP) – Developed by Clayton Lewis, is a Software testing protocol where the user is allowed to talk or express his/her experience while performing a set of specified tasks. They are asked to say whatever they are looking at, thinking, doing, and feeling as they go about their task. Appears interesting to me, food for thought!  After all usability is what drives software success.
TAP @ wikipedia

Task-Centered User Interface Design (pdf) is a book with a ‘cool’ crucial warning …

“We’ve designed this book to be most useful for people who are actually developing user interfaces. That’s in contrast to the full-time interface professionals who do research and evaluation in large corporations. We strongly believe that effective interactive systems require a commitment and an understanding throughout the entire development process. It just won’t work to build a complete system and then, in the final stages of development, spread the interface over it like peanut butter.”

That was my lesson of the day!