What a month it’s been for Valerie Harper. Despite her grim medical diagnosis, she’s been making the rounds and stepping back into the spotlight in a very visible way. First she guest-starred on an episode of TV Land’s Hot in Cleveland, along with Mary Tyler Moore, Betty White and Georgia Engel, all of them beloved veterans of The Mary Tyler Moore Show. Then, earlier this week, she made her emotional debut as one of the contestants on this latest round of ABC’s Dancing with the Stars. And tonight, she’s the subject of a prime-time NBC profile by former Today co-host Meredith Vieira.