Life Without Memory - Documentary about a man who is unable to form new memories although his intellect is perfectly in tact and is forced to live his life in 2-30 second increments. This is part 1 of 4 - you can find the other parts easily enough if you are interested. There is also a 10 minute follow up conducted in 2005 available. This is something you must watch, imo.
Life Without Memory - Part 1b - from here there are a few more - 2a, 2b, 2c, and 2d (...i think)