Harry Potter and Me is a BBC Christmas Special that aired on December 28, 2001. One of the highlights of the television special is J.K. Rowling showing some of her notes for writing the Harry Potter series, including notes on characters, sketches, discarded chapters, and histories she drew up.
You can watch the interview at the following links:
Part 1: http://video.the-leaky-cauldron.org/video/858
Part 2: http://video.the-leaky-cauldron.org/video/859
Part 3: http://video.the-leaky-cauldron.org/video/860
Part 4: http://video.the-leaky-cauldron.org/video/861
Part 5: http://video.the-leaky-cauldron.org/video/862
Check out more J.K. Rowling-related posts at http://hpcelebration.tumblr.com/jkrowling