What is more amusing is watching a show which has ad-breaks designed in but are not used - in the Simpsons they are not usually that obvious but in some older shows (eg. MacGyver, The A-Team, Fresh Prince, yes I still watch them occasionally) you get some incidental music and a fade-to-black and then it fading back in straight away! 24 was quite good because apparently all the ad-breaks were around the clock ticking bits, so when it was shown on BBC2 it was just a nice break between scenes.

Gareth