Some quick linkage
Via Stranger Fruit: Charles M. Grinstead & J. Laurie Snell's textbook, Introduction to Probability is now available as a free pdf, released under the GNU FDL.
Science Blog: Hallucinogen in mushrooms creates universal 'mystical' experience
This one actually intrigued me enough that I just finished printing off the paper in question; hopefully tonight or tomorrow I might have enough time to go through it and give you a quick review. (We can pray, can't we?)
Developing Intelligence on the cognitive prowess of other primates. Read it.
Mixing Memory: The Neuroscience of Playing Chicken. 'Nuff said.