There are a large number of videos embedded on the TMSwiki, here are some of my favourites:

Professor Lorimer Mosely gives a detailed and entertaining explanation of the role of the brain in interpreting and processing pain:

This is a fantastic radio interview with Steve Ozanich – bestselling author of The Pain Deception.  He explains the concept of TMS:

This is an interview with Dr Sarno, the doctor who pioneered the idea of TMS and how chronic pain can be overcome:

This is an explanation from Dr Schubiner, another doctor who works in the field on mindbody medicine: