Do you think you know a lot about Gordon Brown? Or you know enough about him?
Well, I bet you didn't know this:
When Brown first joined politics, he and Blair actually shared an office.
Brown is the longest serving chancellor in 200 years.
Brown's first child with his wife Sarah died 10 days after a premature birth in 2001. They have had two children since, but the second has been diagnosed with cystic fibrosis.
Brown has one blind eye due to a sporting accident as a teenager.
He only wore red ties to symbolise his socialist Labour background. That was until his wife Sarah persuaded him to branch-out into pastel colours.
Brown has used three word alliterative phrases 479 times in Parliament debates (which is well above average amongst MPs).
Charles Clarke accused Gordon Brown of being a "control freak", "deluded" and of having "psychological" problems.
Brown's exceptional intelligence meant that he entered the University of Edinburgh early, at just sixteen-years-old. He later graduated with a first class degree in history.
He has written several books including The Politics of Nationalism and Devolution (1980 with H.M. Drucker), Maxton (1986), Where There Is Greed (1989), and John Smith (1994; with James Naughtie).
Gordon Brown's wife Sarah feels strongly about mothers dying giving birth. She says: "There is no excuse for letting mums die as they give birth...it works out as one death every minute"