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Keynote Speech at Defcon 17 Aug 1, 2009 · 57%

Giving a Powerfully Persuasive Presentation Aug 1, 2009 · 55%

Yoshitomo Tani's Speech at DefCon 17 Aug 1, 2009 · 56%

Speaking at Defcon 17 Aug 1, 2009 · 53%

Speaking at Defcon 17 Aug 1, 2009 · 56%

Speaker at Defcon 17 Aug 1, 2009 · 53%

Keynote Speaker at Defcon 17 Aug 1, 2009 · 55%

Speaking Engagements with Hat and Glasses Aug 1, 2009 · 54%

Keynote Address at Defcon 17 Aug 1, 2009 · 54%

Presenting at Defcon 17 Aug 1, 2009 · 52%

Addressing the Crowd Aug 1, 2009 · 57%

Man with Hat and Glasses Gives Speech Aug 1, 2009 · 57%

Speach at DefCon 17 Aug 1, 2009 · 55%

Keynote Speaker at Defcon 17 Aug 1, 2009 · 57%

Defcon Presenter Aug 1, 2009 · 57%

The Speaker at Defcon 17 Aug 1, 2009 · 56%

The Man with the Plan Aug 1, 2009 · 58%

Yoshitomo Tani addresses the crowd Caption: Donning a baseball cap and sunglasses, Yoshitomo Tani delivers a speech at Defcon 17 while standing at the podium and speaking into a microphone. Aug 1, 2009 · 58%

Speaking to the Crowd Aug 1, 2009 · 55%

Hideaki Wakui delivering a speech wearing a baseball hat Aug 1, 2009 · 54%

Speaking at Defcon 17 Aug 1, 2009 · 54%

Public Speaking at Defcon 17 Aug 1, 2009 · 55%

Addressing the Crowd Aug 1, 2009 · 59%

Giving an Electrifying Speech Aug 1, 2009 · 56%

Speaking to the Crowd Aug 1, 2009 · 55%

Man addresses a crowded room wearing a hat and holding a microphone Aug 1, 2009 · 59%

The Speaker at DEFCON 17 Aug 1, 2009 · 56%