Am told that if you append &fmt=6 or &fmt=18 to the end of a YouTube URL, you get to watch the video in much higher quality. Am not sure if this applies to all videos, or just the ones that already have a perfectly good "watch in high quality" button.Here is a good example - and here is the same video with the hack.
And here - probably a joke - are special glasses that make DVD and HDTV look just a crappy as YouTube usually does.
