We make good documentaries in New Zealand, and nowhere is that more obvious than at the International Film Festival.  This year is a gala one, with over a dozen top Kiwi documentary features on show.   But what's the first step in a documentary?  Simon Morris wanted to find out, and talked to three of our best practitioners - Gaylene Preston (My year with Helen), Annie Goldson (Kim Dotcom - Caught in the web) and Florian Habicht (Spookers).