Richard A. Clarke

饰：Himself - former National Coordinator for Security

Vint Cerf

Vint Cerf

饰：Self - Vice President, Google

比尔·克林顿

Bill Clinton

饰：Self - President of the United States,(archive footage)

Richard Clarke

Richard Clarke

饰：Self - former National Coordinator for Security,(as Richard A. Clarke)

Nicholas Negroponte

Nicholas Negroponte

饰：Self - OLPC Project Leader