SLEEP
'(<a href="http://www.j-archive.com/media/2008-07-22_DJ_24.wmv">Cheryl of the Clue Crew bothers a sleeper with her clue at the Sleep Research Center at Stanford University.</a>)  Doctors are studying not only insomnia, but parasomnia, which includes night terrors & this condition, from the Latin for "sleep" & "walk"'
somnambulism