I have just invented the Poldark number. Like Ehrlen or Bacon numbers, your Poldark number is 1 if you are in it, 2 if you were in something with someone who was in it. Therefore, everyone in Highlander, Quadrophenia, A Clockwork Orange or Lark Rise to Candleford has a Poldark number of 2. Everyone in Game of Thrones has a Poldark number of 3 thanks to Brandon Stark's mate who was in Being Human. And her brother was in Dr Who (as was Viserys Targaeryan) so anyone in Dr Who has a Poldark number of 4.
Who wants to play?