Eric Roberts apologizes to his sister, Julia Roberts, in his book, ‘Runaway Train,' over 'obnoxious' comments aimed at her success. Roberts sits down with ET’s Nischelle Turner to discuss his relationship with Julia and his daughter, Emma Roberts, as well as his cocaine addiction and his comments about ‘Steel Magnolias.’ Roberts' memoir ‘Runaway Train: Or, The Story of My Life So Far’ is available now.