A great documentary to watch before heading to Burma is called 'Burma VJ.' Released in 2008, it's a little dated but I found it to be incredibly interesting. It's about a group of underground reporters who shot footage and smuggled it out of the country when the monks protested in 2007.
When you visit Burma these days, it's common to see photos of Aung San Suu Kyi in many businesses and NLD flags...but this film reminded me of how such behavior was absolutely forbidden just a few years ago.
Here's the trailer: http://www.youtube.com/watch?v=V08EBWQLzyU