Robin Roberts is back. As promised, she's been making some appearances on Good Morning America this month, and she'll be back at the anchor desk on Feb. 20. That's exactly six months since she got her bone marrow transplant to treat a rare blood disorder. "What a difference a year makes," said Roberts; she first started experiencing symptoms one year ago. "I cannot wait to return to my GMA family. It's going to be an incredible morning in Times Square."