Why do people who get episodes of Air Crash Investigation and put frustrating Watermarks on them and at the end of an episode adds for other shows? It would be nice to be able to get as I call them 'clean copies' so I can download them. You do realise that after Season 20 there are no more DVDs being made of each Season so the only possibility of getting copies and sometimes actually watching Seasons 21, 22 and 23 and probably 24 onwards is being able to download them and WITHOUT WATERMARKS AND ADVERTISING.