Boards
Hypnotic TV.
Those programmes that, despite the fact you have no interest in them, you can't quite bring yourself to turn off.
For me, it's Coast. I have no interest in natural history, or the wafer-thin version of human history they portray - and yet, I can lie on the sofa and watch it for hours. I think it's something to do with those swooping helicopter camera shots.
What does it for you?