Eric Dane had Billie in his arms and a smile on his face at Coldwater Park in Beverly Hills yesterday. He spent the sweet day with his daughter now that he's returned home from a stint in rehab. Eric voluntarily checked himself into a treatment facility earlier this Summer in order to overcome a battle with a pain medication that was prescribed to him following a sports injury. The actor completed his 30-day program and returned to work on the eighth season of Grey's Anatomy late last month. Eric looked happy and healthy during his latest outing and he has even more reason to celebrate since his wife, Rebecca Gayheart, who rang in her 40th birthday last week, is reportedly pregnant with the couple's second child.