Research & media articles:

University College London                Hearing Colour, Tasting Sounds  (BBC Radio4)     

 
Sensory perception  (Daily Telegraph)                                  Dr Hugo     
When Sound Is Red (Washington Post)                        Articles about Synaesthesia
A Sixth Sense 60 Minutes II (CBS)          Synaesthesia (Daily Telegraph)     
An Ear for Color (Washington Post)                   !!????!!      
 Extra-sense perception (Dallas News)               Misc. interesting syn links
I'll put some good ones here when I get the time. Also, I'm hoping the results of my MRI scans should make for fine reading!