William S. Burroughs: A Man Within is a documentary about the public and personal side of the Naked Lunch author and legend. Looks interesting. Zebra Kino Konstanz will show the film Febuary 9/10/12/13. 
Also check out this interview the director Yony Leyser gave Stil in Berlin. His next project sounds even more intriguing than this one: A documentary about queercore!