B-List

Mighty Optical Illusions
  <http://www.moillusions.com/>

An interesting collection of optical illusions, some you may have seen
before.

Lots of categories, including:
* 3D Chalk Drawings
  <http://www.moillusions.com/2006/05/3d-chalk-drawings-category.html>
* Billboards
  <http://www.moillusions.com/2006/05/billboards-category.html>
* Escher Style
  <http://www.moillusions.com/2006/05/escher-style-category.html>
* Impossible Objects
  <http://www.moillusions.com/2006/05/impossible-objects-category.html>
* Spot The Object
  <http://www.moillusions.com/2006/05/spot-object-category.html>

Try the elevator with no floor:
  <http://www.moillusions.com/2006/10/elevator-with-no-floor-go-ahead-step.html>

Apparently this is the "scariest illusion" ever:
  <http://www.moillusions.com/2006/04/really-scary-optical-illusion.html>

If you're at work you might want to make sure no-one is near you, just
in case you freak out ;)