Steve Jobs Keynote Evolution

From the last Steve Jobs' Keynote on Macworld Expo San Francisco 2006, I have think about the experience that he has after year by year demos and something like that. I think that Steve Jobs is one of the best doing this type of technical keynotes.

Then I have searched some videos to follow from his begin until now. First of all I want to add the following exceptional video of Steve Jobs introducing the Mac computer on 1984:


In the second video can you see a Steve Jobs' Keynote over iSight and iChat at Summer of 2005:


Then we can watch the evolution of Steve Jobs doing keynotes, and his improvements after 12 years.
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