* Wikipedia's Free Library (not an encyclopedia)
It contains mostly older works, but interesting stuff nonetheless. (i.e. Walden by Thoreau, and The Metamorphosis by Kafka)
Some Psych articles (I'll post more if anyone's interested):
* Evolution of Human Music Through Sexual Selection (an interesting paper on how the creation/development of music may fit in with the theory of evolution, by Geoffrey Miller)
* A Review of Sexual Selection and Human Evolution: How Mate Choice shaped Human Nature (Also by Geoff Miller)