FILE - In this Jan. 12, 2012 photo, former "Today" show hosts Katie Couric attends the "Today" show 60th anniversary celebration at the Edison Ballroom in New York. ABC announced Thursday, March 29, 2012, that the former "Today" show anchor will be guest-hosting "Good Morning America," the rival wake-up show at Couric's current workplace. Beginning Monday, Couric will sub for the vacationing Robin Roberts. She will appear for the week alongside Roberts' regular co-host, George Stephanopoulos. Couric was co-host of NBC's "Today" for 15 years before leaving the network in 2006. Before jumping to ABC last year, she was at CBS, where she anchored the "Evening News."(AP Photo/Evan Agostini)
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