Are rational decisions produced by the conscious or subconscious mind?

Are people capable of making fully conscious decisions? Or does our subconscious play an unforeseen role in influencing our decisions? If our subconscious does play a role, can we still make rational decisions? The following documentary (referred to us by Geoff McGovern) deals with the "hidden motives" of the mind. It got me thinking about whether we can still claim people are making rational decisions even if we believed they were making those decisions subconsciously. More after the jump….