For me it has to be the 'turning up in the wrong place at the wrong time' gimmick, which usually results in the protagonists getting accused, captured or threatened with death due to the circumstances they've just walked into.
It's just a way of stringing out events in order to create tension and ensure the development of whatever evil machination needs to be dealt with.
Watching the Doctor and companions find a way of exonerating themselves from tedious circumstantial accusations makes me prone to skipping. For example, I usually skip the dialogue in Earthschlock from the moment Lieutenant Scott encounters the Doctor until the point the androids fire on him. The same goes for the moment Ringway catches the Doctor and Adric stooping over two freshly dead crew mates; I'll jump right to the point where the Cybermen emerge from the silos.
It's just a way of stringing out events in order to create tension and ensure the development of whatever evil machination needs to be dealt with.
Watching the Doctor and companions find a way of exonerating themselves from tedious circumstantial accusations makes me prone to skipping. For example, I usually skip the dialogue in Earthschlock from the moment Lieutenant Scott encounters the Doctor until the point the androids fire on him. The same goes for the moment Ringway catches the Doctor and Adric stooping over two freshly dead crew mates; I'll jump right to the point where the Cybermen emerge from the silos.