Different year, same story for Blockbuster. Though it's made strides in shifting from its old business model to a new kiosk, delivery and online approach, it still felt it was necessary to use cautionary language like "substantial doubt about our ability to continue as a going concern" in an SEC filing this week. We'll see if its new plans to handle the debt problems that have put it in such a hole allow it enough flexibility to fight back against Netflix and Redbox, but 2010 figures to be yet another uncertain year for the former rental champ.