The iPhone was introduced at the Macworld Conference & Expo 2007 with a keynote address from San Francisco's Moscone West.

Wikipedia - Steve Jobs: http://en.wikipedia.org/wiki/Steve_Jobs

PlayList: http://www.youtube.com/view_play_list?p=8E24EA087A3D7AC1

Steve Jobs - 2007 iPhone Presentation ( Part 1 of 2 ): http://www.youtube.com/watch?v=6uW-E496FXg

Steve Jobs - 2005 Stanford Commencement Speech: http://www.youtube.com/watch?v=xwlfZsuM05Q