This is one of the better documentaries I have come across and should firmly challenge notions of self, I and free will. Well worth the time to watch in its entirety.
After you watch the video, take a trip over to youtube and have a read of some of the comments. People are so threatened by some of the findings presented in this documentary it seems. The comments are a great example of people clinging to beliefs rather than being able to question their own.
p.s. I think I read somewhere that Dolphins have self-awareness as well which the video does not mention.