TORONTO – Former Corus Entertainment exec Barbara Williams is joining the CBC as its executive vice-president effective May 1st.In a memo to employees on Wednesday, CBC CEO Catherine Tait described Williams (pictured) as a “veteran media executive with deep knowledge of Canada's ever-changing media landscape”, noting her past roles as EVP and COO at Corus Entertainment, as well as senior positions at Shaw Media and CanWest Broadcasting. This had been a widely rumoured landing spot since she left Corus at the end of October.“A visionary leader, Barbara brings with her a wealth of experience with respect to developing future revenue...