With a list of 29 contenders, Scott Feinberg is figuring 2010 is the best year ever for documentaries. The list of serious award contenders is much shorter, of course. The Tillman Story, Restrepo, Joan Rivers: A Piece of Work, Countdown to Zero, Exit Through The Gift Shop, Smash His Camera, Waking Sleeping Beauty, Tabloid, Inside Job, Client 9: The Rise and Fall of Eliot Spitzer, Freakonomics and two Feinberg didn’t mention — Werner Herzog‘s 3D cave-painting doc, and Thom Zimny‘s Bruce Springsteen doc, The Promise: The Making of ‘Darkness on the Edge of Town‘?