Rob Lowe, his role on has become a family affair. The actor's son, John Owen Lowe, is working as a writer on the emergency drama series while his brother, Chad Lowe, directed this week's episode — and Rob recently told ET that he's had a great time working with those closest to him.«I'm so happy and proud and it makes coming to work even more fun than it usually is,» Rob said, as he sat down with ET alongside John Owen and Chad.«I can't stop smiling,» Chad added.