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Another co-host who left after stirring controversy, Rosie O'Donnell took over for Vieira in September 2006 but quickly jousted with Jones and Hasselbeck.
She's credited with taking on more political issues and, though she drew criticism for her outspokenness, driving ratings.
O'Donnell cut her contract short in May 2007 after a particularly heated discussion with Hasselbeck.
"I didn't want to argue for a living," she told Oprah Winfrey.
Since leaving the show, O'Donnell went back to hosting her own daily show on Winfrey's network, but the show was cancelled after less than a year. Last summer, O'Donnell married second wife, Michelle Rounds, and they adopted a baby girl named Dakota.