Seemingly unable to wade through their differences, Ben Harper has filed for divorce from his actress wife Laura Dern. With the move coming after five years of marriage, the former couple cited irreconcilable differences as the reasoning behind the court filing. Having turned in the paperwork seeking separation on Friday (October 8), the documents tell that Ben and Laura have actually been split up since January 2010. With both parties seeking joint custody, Ben and Laura are parents to a 9-year-old son (Ellery Walker) and a 5-year-old daughter (Jaya)...