We have researched other documentary's with the same genre and plot/narrative. We had a look at the documentary supersize me. We had a look to find some inspiration and techniques to use in our own documentary. We had a look at this clip - http://www.youtube.com/watch?v=XmOj54D2GJI
As you can see Morgan Spur lock is the host/presenter of the documentary, and uses techniques such as hard hitting facts with shock factor. He also interviews passers-by and asks them questions relating to the narrative. This inspired us to use this in our own documentary by interviewing random people passing by and gain their opinion. This way we would have a large range of different types of people to gather opinion from. He also had clips of the type of people using fast food restaraunts alot