Deep Water
 

Just checked this out today. It's from the producer of Touching the Void. While it's not quite the powerhouse of a story that TTV was, it was still an amazing, sad story. It's about Donald Crowhurst who sets off to win a solo around the world race. He's really just an amateur sailor who has visions of grandiour and gets in way over his head. It includes film footage shot by Crowhurst as well as tape recordings and journal entries. Definitely worth checking out.

http://www.deepwatermovie.co.uk/

Open Water, Dark Water, now Deep Water. This is getting confusing. :)