Island SLEEP Health Services Inc.

Excellent review of sleep disordered breathing.  Perhaps a tad detailed for the average patient but an excellent resource for medical / Polysom or RT students.  Please note the menu tab on the bottom left while watching the FLASH presentation of Sleep Disordered Breathing found via this link:

ResMED Understanding Sleep Disordered Breathing

SnoreSAT clinical / comparison and other readings:

Can be found here at Sagatech's website.
Note the 'Readings' from their homepage "hyperlinked’ to PDFs.  

General Sleep and Sleep Apnea educational links:

http://www.sleepeducation.com/index.aspx
www.sleepapneainfo.com