The Free Will Theorem
John Conway (of Game of Life fame) is currently presenting a series of public lectures at Princeton to explain his work with Simon Kochen on the free will of elementary particles.
They assert, roughly, “that if indeed we humans have free will, then elementary particles already have their own small share of this valuable commodity. [… A] particle’s response [to human intervention] (to be pedantic—the universe’s response near the particle) is not determined by the entire previous history of the universe.”
For the Mathematicians and Physicists: The Free Will Theorem