HotDocs13: William and the Windmill (2013) A great doc on the developing world and William Kamkwamba. Read More Reviews, The Festival Circuit, Aren's ReviewsAren BergstromApril 29, 2013documentary, Hot Docs, Hot Docs 2013, HotDocs13, inventor, Mawali, TED, Tom Rielly, William and the Windmill, William Kamkwamba, windmillComment