An interesting tidbit for YouTube users. Although it has a plethora of videos, YouTube is often slammed for extremely low video qualities. Here's a trick to get higher quality versions of some videos: appending "&fmt=6" or "&fmt=18" (without quotes) to the end of a video's URL can hook you up with better qualities, at 448x336 and 480x360, respectively.
http://googlesystem.blogspot.com/2008/03/y...ion-videos.html