Have you ever watched the fantastic videos from the TED conferences? There are some really great lectures on a variety of topics on the TED website. I just listened to about a dozen fascinating lectures while painting. Here is a great lecture on Creativity by Amy Tan (The Joy Luck Club), I think it is fascinating learning about the sources of different artist's creativity. The description for her lecture is:
Novelist Amy Tan digs deep into the creative process, journeying through her childhood and family history and into the worlds of physics and chance, looking for hints of where her own creativity comes from. It's a wild ride with a surprise ending.
It is only 20 minutes, if you have time take a look.