Last year I took part in this BBC documentary, and I've finally found it all online, so you can watch it if you missed it. It documents the history of hair in the 20th century, from the beehive to the invention of the blow dry. It's really watchable, but full of great titbits of social history. I really recommend it, even though my bits in it embarrass the heck out of me! No one likes themselves on film do they?!