Approaching his 60th birthday, magician Penn Jillette suffered from high blood pressure and tipped the scales at 330 pounds; if he wanted to see his children grow up, he knew he had to make a change. As Jillette relates here, help came in the unlikely form of former NASA scientist "Crazy" Ray Cronise, whose potato diet helped him to lose 100 pounds in a matter of months. With rollicking, off-kilter humor, Jillette takes us along on his journey from skepticism to generating the inspiring, life-changing momentum that transformed his body and mind, all while offering memorable asides on the universal subjects of sex, religion, and pop culture.