Last night's 4 Corners episode (31 July), Junk History, was wonderful for Ext. All about Gavin Menzies and his bestseller '1421: The Year China Discovered the World'. He comes across as a likeable nutter but the implications for how history works are fascinating.
It will be repeated later this week.
Felipe Fernandez-Armesto was hilarious. Full text of his interview is on HTA's website.