Ken Ribet is the president of the American Mathematical Society. He played a key role in the proof of Fermat’s Last Theorem.
Ken Ribet’s home page
The AMS
Ken’s famous paper
The Wiles Proof of Fermat’s Last Theorem
Numberphile video with Ken about his work
Ken’s 87 hair cuts
Simon Singh discusses Fermat’s Last Theorem in a Numberphile video
With thanks to
MSRI
Meyer Sound