free books!

Here is a list of websites that give free access to a wide variety of books, both fiction and non fiction/ academic.
http://www.questia.com/publicdomainindex
http://www.questia.com/library/encyclopedia/  
http://www.gutenberg.org/
http://www.archive.org/details/opensource (various languages)
http://oreilly.com/openbook/
http://www.free-ebooks.net/
http://www.freebooks4doctors.com/
http://www.onlinebooks4free.com/ (slow but links to full text via external servers)
http://www.rarebookroom.org/