Slightly longer cheer up this morning (25 Min's), but its well worth a look IMHO. Its a video of the making of the London underground map, (or diagram if you prefer). The chap who did it, Harry Beck, perhaps has not had the recognition he deserves. This video provides that recognition . The map (or diagram) is a wonderful example of usability and design, thinking about the people who would use it rather than the data itself.
BTW do have a look a Smashing Telly, an excellent example of a web service, proving access to a well defined set of videos from various sources (YouTube, Veoh etc), with commentary.
(h/t: David Thompson)