Eric Roberts, an accomplished 68-year-old actor with three Golden Globe nominations and an Oscar nod for “Runaway Train,” is best known for his roles in “King of the Gypsies” and “Star 80.” As the older brother of Julia Roberts and father to Emma Roberts, Eric is stepping out of his comfort zone for a new challenge on “Dancing with the Stars.” Partnered with Britt Stewart, Eric is ready to show a different side of himself as he takes on the ballroom.