Individual Sundance Film Festival ticket sales are right around the corner -- next weekend, Jan. 8-9 -- but as usual you're probably just taking your best guess as to what movies will be worth your while. We have at least a little help, courtesy your local library or bookstore. ---

Several films on the Sundance 2010 schedule are based on books, so we took a look at a few of them here. Our thoughts on the source material might provide you at least a little more assistance as you plow through the film guide trying to fill those precious few slots.