Tony Wheeler from Lonely Planet
The talk was about how Lonely Planet was started and pictures from some of his many many travels. Lonely Planet by the way should have been called Lovely Planet but because Tony heard the lyrics from a song wrong it became Lonely Planet. You can read more about it here.
There was a lot of questions afterwards and one of them was how many countries he has visited. He answered that he has visited 117 countries. Quite amazing considering that he's been traveling most of his life. But as he said: "the more you travel the larger the world gets". I've only visisted 28 so I still have some way to go.