His name is Tour --just Tour --and like many of the musicians, athletes, and celebrities he's profiled, he has affected the way that we think about culture in America. He has profiled Eminem, 50 Cent, and Alicia Keys for the cover of Rolling Stone. He's played high-stakes poker with Jay-Z and basketball with Prince and Wynton Marsalis. In Tour 's world, Dale Earnhardt, Jr. sits beside Condoleezza Rice who sits beside hip-hop pioneer Tupac...