It's the latest in a series of high-profile departures from the network. Discovery Health & Fitness senior vice president Rita Mullin will serve as an interim replacement.

MTV vet is the latest in a line of defections for Winfrey's network

Interview series gives network 463 percent increase over time-period average in December.

Series will feature model attempting to mend family ties after daughter moves back in with her

Well-regarded programming exec is out just four months after Winfrey seized control of struggling OWN

Competing with bridezillas, bad girls and real housewives, OWN vows to "bring light" -- even at the expense of short-term success

Brand, who O'Donnell says has replaced Tom Cruise as her current celebrity crush, will appear on the Oct. 10 OWN premiere

EXCLUSIVE: From civil rights groups to Oprah Winfrey, criticism is rising at the cable giant's slow moves on its diversity pledge

The solution isn't for the network to better reflect her voice -- it's for the Queen of Talk to talk to her fans again

Makers of vibrant high-school poetry film find Oprah's Doc Club a new destination in a changing landscape -- but it comes at a price

Company boasts 15 percent gain in advertising revenues

OWN partnership with social app gets network on front page of all new downloads

Time-slot shift will kick off with a two-part special on Winfrey's Australian adventure

Family secret to be revealed today. Is it a twin? Because that would explain a lot