Links to other Demos, Perception sites, and generally cool stuff.

Some Vision Stuff:

You might want to start with Randy Blake's website for the textbook, which is here:
Blake's Page

A fantastic resource for all things related to vision and visual perception is:
Viperlib

An extensive, entertaining, and informative collection of illusions for your viewing pleasure:
http://www.michaelbach.de/ot/

Peter Kaiser's on-line vision book:
http://www.yorku.ca/eye/index1.htm

Another illusion site is:
http://www.illusionworks.com/

U.C. Davis has a really neat simulation of a pair of eyes following your mouse cursor.
You can disable extraocular muscles and see the result.  This helps you to visualize the
functions of each muscle.
http://cim.ucdavis.edu/Eyes/eyesim.htm

... And Some Hearing Stuff:

This is link to some nice animations (er, I bet you could tell that from the link, huh?).  I think it is
very helpful for visualizing cochlear mechanics.
http://www.neurophys.wisc.edu/animations/