I have been on youtube a couple of times in the past, but never really played around with the site.  Lots of fun.  I searched for some library videos and found some very funny ones as you can see.

This would be a great marketing tool to reach young adults and even older adult patrons who may have stayed away from the library.  Making a fun, lively – tour of the library type of video would bring some folks in who may have an old “picture” of the library in their head.