A bevy of big names --including Oprah-- is helping to fill in for Robin Roberts while the "Good Morning America" host takes an extended medical leave.
Roberts, who is battling the rare bone marrow disorder MDS, began her leave on Thursday. The show devoted its second hour to her, and during that time, announced some of the people who would take over from Roberts during her absence. It's not clear how long she will be gone, though her treatment will take at least some months.
ABC News is drawing from its extensive stable for some of its guest hosts. Diane Sawyer, Amy Robach, Elisabeth Vargas, Katie Couric and Barbara Walters will all do stints.
But the network is also looking beyond the news division for the lighter portions of the show. Kelly Ripa, the cast of "Modern Family," Rob Lowe and Chris Rock will all pitch in.
No name stuck out as much as Oprah's, of course. Beyond her stardom, her hosting brings with it a healthy dose of morning-show competition, since her best friend, Gayle King, is one of the hosts of rival show "CBS This Morning."
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