On this week's Politics Show... Britain's next Prime-minister.
On the day that he is officially crowned Labour's new leader we will have an extended interview with Gordon Brown.
He's hardly an unknown quantity.
He's been the most powerful Chancellor ever - a dominant force in government for the whole of Labour's decade in power.
Yet much of what we know about him has been shaped by his struggle to succeed Tony Blair in the top job.
The struggle is now over.
We don't really know that much about his views on foreign policy, or whether he will be more relaxed and collegiate with other ministers now he's got the top job.
His reputation is as a tribal Labour loyalist - so how can you reconcile that with him offering Paddy Ashdown a cabinet job?
And how does he appear both new and the continuity candidate.
I'll be seeking answers...
And his deputy...
Sunday is also the day his Deputy Leader is announced, at the same special conference in Manchester.
While Mr Brown has been crowned unopposed, the position of Deputy has been hotly contested between six candidates.
It's genuinely wide open - none of the six is out of the running, none is clear favourite.
And there's been no reliable polling to indicate how second and third preferences will transfer as the candidates are eliminated one by one.
We'll report live from Manchester.
For as long as governments have existed, they've been concerned with making the economy more prosperous, reducing crime, improving school exam results and other measurable indicators of national progress.
But maybe they've missed a trick.
In recent years academics and think tanks have increasingly argued that happiness should be our goal.
And being richer or improving any of those other indicators will not necessarily make us happier.
Survey evidence suggests that in this country we're no happier than we were in 1950 - even though we're far richer.
David Cameron has spoken of the need to pay more attention to happiness, and so have ministers.
But is this really a proper objective for government policy - or is it nailing jelly to a wall?
Is our happiness or lack of it our own business, and nothing to do with the state? Karl Mercer reports.
...be happy... join us this Sunday at 12 midday...
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