When I'm sick of Radio 4, I occasionally listen to this. No modern politician that I can think of can compare with Churchill; he makes you realize just how poor at speaking many of them are.
Of course he had far more dramatic subject-matter. And this CD helps you to imagine what it must have been like in the war, when you might have listened to some of these speeches on the wireless. They can be very moving.
Some of them are read by Winston S. Churchill - Sir Winston's grandson - because recordings of the man himself couldn't be found. Also I've noticed in the bookshop you can buy this CD as one in a set of three.