When Mark Thompson spoke of "radical change" at the BBC and insisted that he was "up for the fight," in his speech at the Edinburgh TV festival, exactly what did he mean? Steve Hewlett speaks to the BBC's Creative Director Alan Yentob.In that same speech, the MacTaggart Memorial Lecture, the BBC's Director General also said that "it's time for Sky to pull its weight" - Sky's Director of Public Affairs David Wheeldon responds.The BBC's political editor Nick Robinson has written a blog headlined "Blair and Brown - an apology". It's tongue in cheek but refers to the jucier side of what Tony Blair has told us in his memoirs published today. But how much of what we now know - did we not know then? And what does it tell us about political reporting?And after Tottenham Hotspur manager Harry Redknapp walked out of an interview with Sky Sports after his side lost at the weekend, and Sir Alex Ferguson continues to refuse to be interviewed by the BBC, we ask what value do post-match interviews hold? Steve is joined by Lynne Truss and Guardian sport's writer David Lacey. The producer is Joe Kent.