Special guest David challenges Mark to a game of Doctor Who Trivial Pursuit, to see who is the ultimate fan (nerd) of all! Highlights include:

- Mrs White is the best Cluedo character, apparently

- Some people have been 'Northernised' to protect their identity

- What happened to Sally Gray?

- Doctor Who nerds are no good at trash talk

- Neil Armstrong is not part of the TV crew

- Jeremy Paxman never stumbles over his questions

- There's a disappointing amount of knowledge about the Androzani King and Queen from Tree Planet 475