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Bill Weir
CNN Anchor -
Actor Daniel Radcliffe
20 steps away from host A.J. Jacobs -
Jenna Ushkowitz
Glee star -
A science-themed playground that includes slides, climbing nets, fog machines and a giant lever
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George H.W. Bush (via video)
21 steps away from host A.J. Jacobs -
Morgan Spurlock
Documentary filmmaker, humorist, television producer, screenwriter, and political activist. -
A family-themed scavenger hunt
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Harvard Professor Steven Pinker
Close DNA cousins with host A.J. Jacobs