Arvind Kejriwal has been at the heart of an inspiring campaign to combat corruption by using the right to information. He spearheaded a campaign in Delhi along with many other groups that popularised the use of right to information. Arvind got the Magasassay for his work. The videos below contain a talk he gave on using RTI, which I think is a good introductory material for people with an interest on how it could be used, and what it means.