The quote at the end of today's word a day:

In all of us, even in good men, there is a lawless wild-beast nature, which peers out in sleep. -Socrates, philosopher (469?-399 BCE)

made me think of the New York Times article on "parasonmnias" that came out this past Sunday (Feb 2, 2003). You should check it out, fascinating article on sleep disturbances and the inner beast. http://www.nytimes.com/2003/02/02/magazine/02SLEEP.html