A few BBC shows/podcasts I like:

Peter Day's World of Business: http://www.bbc.co.uk/podcasts/series/worldbiz (international business news, interviews)

From Our Own Correspondent: http://www.bbc.co.uk/podcasts/series/fooc ('letters' from far-flung places)

Excess Baggage http://www.bbc.co.uk/podcasts/series/excessbag (travellers and travelling)

Kermode and Mayo film reviews http://www.bbc.co.uk/podcasts/series/kermode (witty round-up of new film releases with a cult following)

Material World http://www.bbc.co.uk/podcasts/series/material (science show)