Olbermann's Legacy

Eric Deggans looks back on what Keith Olbermann brought to MSNBC: "I do think many writing about Olbermann's departure forget his biggest legacy at MSNBC, perhaps even bigger than introducing the channels' current stars Lawrence O'Donnell and Rachel Maddow to his audience: Proving that cutting humor plus newsy content can equal big ratings in cable TV." Bill Carter and Brian Stelter look back on Olbermann's history of tension with his MSNBC bosses.