I saw James Cameron's "Sanctum" last night. It's a grim, tense tale of an underground exploration going wrong when a massive cave system floods. I saw the excellently done 3D version, and it was just as riveting as it gets. No monsters or aliens here, just good old-fashioned suspense. As a diver I loved the underwater scenes, and some of the footage is truly spectacular. Metacritic gave it very average scores, and we were almost alone in the theater, so it's likely not a commercial success. Too bad as it scored a good 8 in my book.