This video is, as it is said, seriously cool - and a nice example of the viral thing - i.e. saw it on Michael Stephens, Tame the Web library blog.
Also note - it uses the new tool from YouTube which lets you see an array of videos - so after the first one, look for the panel along the bottom of the YouTube screen.
I havn't seen them all yet - but I love the pool meets checker
Note: on Michael's blog there is a commnet from the librarian from the first video:
".....That's my library (Funk ACES Library, UIUC) and if I had known about this I would have spoken sternly to the student(s) who made the video and kicked the Grad Assistant who let them do in in the behind. We got in trouble when the Power that Be in the Main Library found out about this"