Watching career-spanning videos of Neil Young means witnessing his titanic artistic development. You can see the scrappy young folk troubadour alone onstage crooning "Old Man" in 1971, catch him making history 14 years later delivering "The Needle and the Damage Done" at Live Aid, then behold a righteously rockin' elder statesman zooming down the highway singing 2009's "Johnny Magic." As you watch Neil evolve, you can feel the way rock ’n‘ roll matured along with him.