Though only 38, Casey Neistat is something of the grand old man of YouTube. He became a viral sensation in 2003 when he uncovered Apple’s attempts to keep people locked into buying its products by making batteries in its iPods irreplaceable – and quick to wear out. He parlayed that into making independent films and an eight-part television show for American cable network HBO. He joined YouTube in 2010 and is approached by its executives when they want to publicly admit to and atone for transgressions against the community. He has 10 million subscribers, but his power eclipses even that vast number.