Rob Reiner, right, arrives with his wife Michele at the memorial services for Nora Ephron at Lincoln Center in New York, July 9, 2012. A son of the couple, Nick Reiner, 32, was arrested after the celebrated Hollywood director and his wife were found dead in their Los Angeles home on Sunday, according to online jail records viewed Monday. (Richard Perry/The New York Times) Monday. By JULIA JACOBS Rob Reiner, the son of a pioneering television comedian who became a popular sitcom actor himself...