I am a huge fan of the Internet Archive--often referred to by its URL, Archive.org. The Internet Archive is a non-profit dedicated to "universal access to all knowledge." They have a dizzying array of audio and video recordings, an ebook interface that is far superior to that of Google Books, and a "Wayback Machine" that allows you to view webpages that have since been deleted. This brief video highlight some of their work--and their elegant server farm. Enjoy:
Internet Archive from Deepspeed media on Vimeo.