Exposing the Supernatural – James Randi

Videos of one of my heroes James Randi speaking on TED have been released on Youtube.
Part 1 is above, part 2 and 3 are at the end of this post.
James Randi is well known for debunking charlatans like Uri Geller and Peter Popoff. James has spent much of his life explaining to people not to believe everything you see or hear. But it seems that people like to be fooled because shows like Char and the New Uri Geller Show seem to be popular (at least in the Netherlands).
Please take a look at parts 2 and 3 where James explains why mediums are dangerous.