Tonight a couple of the broadcast news anchors will be changing channels. ABC’s Diane Sawyer will be on Fox News Channel’s “The O’Reilly Factor” to talk about her Gabby Giffords special which airs tonight at 10pmET/PT on ABC. And NBC’s Brian Williams will be on Piers Morgan‘s CNN show at 9pmET, ahead of his own live primetime hour, “Rock Center” at 10pmET/PT. “Piers Morgan” EP Jonathan Wald — a former EP of “NBC Nightly News” — got a quick Tout-out from Williams after the interview this afternoon.