PBS is airing a special based on Michael Pollan's book, The Botany of Desire, on October 28th. From the PBS web site:
"Featuring Michael Pollan and based on his best-selling book, this special takes viewers on an eye-opening exploration of the human relationship with the plant world, seen from the plants' point of view. Narrated by Frances McDormand, the program shows how four familiar species – the apple, the tulip, cannabis and the potato – evolved to satisfy our yearnings for sweetness, beauty, intoxication and control."
It sounds interesting. Perhaps I'll DVR it and check it out.