Producer Simon Crosse answers the FT FAQs:

No, the 'ting' gets a point, an arrow gets two and a hallelujah gets three. The 'be-uuuh' sound is a point off. It's highly scientific.

We would like to pretend the whole thing is ad-libbed but the truth is that panellists get notice of the topics before the show, but Defend the Indefensible is always secret.

Johnny Vaughan for a year and a half, Christian O'Connell for about the same time and Colin Murray since February 2006. It’s been more difficult to get rid of him. There have been guest hosts, most frequently Gabby Logan and Nick Hancock, but also Alan Davies, Terry Wogan and Greg James.

Yes, probably one day. We've been talking about it for years. We just need to decide who will host it.

October 2003 with Stan Collymore, Greg Brady, Bradley Walsh and Will Buckley on the panel and Johnny Vaughan hosting. Collymore won.

It's a version of Sabotage by Beastie Boys which has evolved over the years.

We try and book two broadcasters/journalists, one comic and one sportsperson. But it's not strict rule. Rarely do we have two comics on together.

John McEnroe for me. Colin's dream guest is American broadcaster Tony Kornheiser.

Yes, there was a lengthy series of FT on BBC2 back in 2005 (3 episodes).

Dolphins have a unique respiratory system which allows them to spend long periods of thirty minutes or more underwater. However, they need to be awake to breath, so can't fully sleep. They have a system of unihemispheric sleep, resting one half of the brain while the other remains awake.