24 is unrelenting

I have had a slight sense of unease all week and I worked out what it is that's nagging at me.

I am watching the second season of 24 on the train at the moment, it's really good but so much terror, torture and suspense in one sitting is obviously getting to me! Being only up to disc 3 of 7 means there a few days left to go when I will be half expecting a nuclear bomb to go off.