Neil Patrick Harris gave an update on Jimmy Kimmel?s son as he filled in for the late-night host on Jimmy Kimmel Live! on Wednesday, December 6. As previously reported, Kimmel?s 7-month-old boy Billy underwent his second heart surgery earlier this week. In his absence, he asked fellow stars to sit behind his desk. Harris told the audience during his monologue, ?I?m thrilled his son Billy?s heart operation was a success. He?s recovering very well. Jimmy told me today, the respirator is out." Harris noted that Billy is also eating and smiling. He added, ?We?re sending lots of love to all the Kimmels,. Billy is a brave little boy and it?s heart-wrenching ? literally.?