Adventures of a Physicist - Luis Alvarez.
Luis Alvarez is a personal hero of mine, and to be frank, I don't admire very many people, and not very much. What I admire about him is his boundless sense of curiousity and his incredible ingenenuity at finding ways to satisfy that curiousity.
Luis Alvarez experimentally confirmed the positive charge nature of cosmic rays (highly accelerated nuclei), electron K-capture decay, and meson-catalyzed fusion. He also invented phased-array radar and the first aircraft ground-control landing system. He performed important work in the Manhattan Project, mainly involving the complex triggering mechanism for the plutonium device.
Wandering outside the realm of physics, In conjunction with his son Walter, Luis Alvarez has seemingly solved the mystery of the dinosaur die-off. Their theory of a cosmic impact being responsible for the K/T extinction is widely accepted today.
A great man with a truly great mind.