...Blackadder. (Although surely Prince Edmund is the only Blackadder in history to descend to Bean-esque levels of competence.)
And if Brown is Blackadder, the Chancellor must be Baldrick.
5.30pm update: Vince is certainly on to something here. Do follow the Wikipedia link to Prince Edmund above:
"He is a drastically different character from what his descendants turn into; he is incompetent and slow in the uptake, and when he carries out something Machiavellian he is shown to be either half-hearted or to regret it afterwards, as demonstrated in the first episode when, after accidentally cutting off the king's head, he later returns to haunt him in a Macbeth-like scene at the banquet...His primary concern is to seize the British throne and become King."
And Wikipedia on the characteristics of the Blackadder line in general:
"Throughout each
series(Parliament), Blackadder is a self-serving, cynical opportunist concerned solely with increasing his own influence and status within his society...rather than serving any idealistic goals."
