I noticed this morning (and sometimes in the past) that the sound and the video on my TV doesn't always sync properly...maybe I'm crazy, but it seems like a second off. i never really noticed it that much but today I was watching something and the person hit the palm of their hand with their fist and the sound occurred before the fist hit.....does anyone know of a test that can be done (or a movie clip) that would be a good test for this type of thing?