Guesting this week on the cheap-but-effective comedy discussion show are the reliable Mark Watson and the refreshingly unreliable Ardal O'Hanlon. Topics include the semi-serious ("Barak Obama can only disappoint us") and the deadly serious ("Doctor Who is rubbish")

Who was the best guest team captain?

A review of Davina McCall, Mark Watson, Dermot O'Leary and Omid Djalili.

In a medium where the voice is everything, a narrator endowed with enthusiasm and intelligence is the king. And so it is with Mark Watson, who returned this week with his second series for Radio 4.

Watson was once an ultra-nervy performer who hid behind a faux Welsh accent. Now he is a fiercely intelligent, articulate comic whose mixture of brilliant observational comedy and, as he puts it, 'thought', is unmatched.

We Need Answers Edinburgh Interview

One of the newer comedy collectives consists of core members Mark Watson, Alex Horne and Tim Key. The three friends have been working together on projects since 2001 and last year premiered the Fringe's first interactive quiz show.

Mark Watson is not a comedian who is short of ambition. In 2006 he did a stand-up show in which he wrote a novel with his audience. Then last year came his methodical deconstruction of the Seven Deadly Sins. His new series picks up where he left off, only with the moral lever now switched to the virtues. This week that makes for a blissfully madcap journey around the concept of courage. Extremely silly songs about being brave (from poet Tim Key) complete the picture, my favourite of which is 'ignore peer pressure - unless you're a structural engineer who is building a pier, in which case don't put lives at risk.'