Talking about brain fog...
There's also...

The Brain Fitness Program...

http://www.youtube.com/watch?v=4b3XcNENTLk

Plus the secret life of the brain...
on PBS.. This is interesting as well too...

http://www.pbs.org/wnet/brain/

Sharp Brains.. This is the fitness program site..
UCSF.. Interesting...

http://www.sharpbrains.com/blog/2008/01/08/the-brain-fitness-program-dvd-michael-merzenich/