The internet makes it much easier for politicians to communicate directly with voters - think of the interest when David launched WebCameron, or Tony Blair's rather embarrassing attempt to catch up on YouTube.
I don't know how many more movies I'm going to get the opportunity to make and I don't want to look back and go: "Man, I just floated through that one. " Or: "I did that one for the money. " I want to be able to say that I worked as a hard as I could and I did the best work that I could do.