I have mentioned Win Riley's documentary on Walker Percy a few times. Despite thinking the movie thin in a few places, I highly recommend watching it when it will be shown on PBS on October 4, 2011. Here's the trailer:
Speaking of movies, if you have the chance to see Senna, the movie about Formula One driver Ayrton Senna, I highly recommend it. It comes with a bias (how could you not regarding the Senna/Prost battles?) and I wish certain areas were better developed. Even so, I have no hesitation in recommending it.