Richard Polsky's seriously hilarious book Boneheads: My Search for T. Rex leads us deep into the South Dakota Badlands where he discovers a lost tribe-the Boneheads-and becomes one of them. This oddball group of dinosaur hunters is intent on bagging the Holy Grail of the profession: a Tyrannosaurus rex skeleton. Fewer than 50 skeletons have ever been found, but one of them brought $8.3 million at Sotheby's.