You know what annoys me? When a series has been on for 5 weeks and the last episode is advertised to death. If you've watched the series you'll know when the last episode is on and if you haven't you wont care!!
The thing that annoys me is that they advertise the next programme over the closing minutes of the current on,they don't even wait for the credits anymore.
It infuriates me too. They show the same clips over and over again that by the time it comes to be shown, I've completely lost interest!!! And as for showing bits of the next episode, well, words fail me Grrrrr
I remember ITV hyping Demons a lot before it started and look how that turned out! The more hype a programme gets usually means it's rubbish, but I suppose all channels are more desperate for viewers these days so they have to try something to get people interested. I'm guessing they think people don't read TV magazines or use the internet to get such information.
And what's even *worse* during some programmes (mainly "reality" TV) is when they show you at the start what's coming up during that episode. And then every ad break they remind you what's happened so far and what's coming up in the next few minutes just in case you might switch off before then.