The Skeptics Society http://www.skeptic.com
The Skeptics Society is a scientific and educational organization of scholars, scientists, historians, magicians, professors and teachers, and anyone curious about controversial ideas, extraordinary claims, revolutionary ideas and the promotion of science.
The Skeptic's Dictionary http://skepdic.com/
Skeptical definitions and essays on occult, paranormal, pseudoscientific ideas and practices with references to skeptical literature.