Also Crimewatch has always been a respected programme, regarded as doing a valuable public service - and not seen as an entertainment prog.
Up until now, that is.
But Monday's programme has become a show. The hype has been on an epic scale for a Crimewatch programme.
Kirsty Young gushes: "The case that has captivated the world".
One of the Met's finest (DCI Andy Redwood) claims - unconvincingly - to have had a "revelation moment".
Yet beneath all the hype, the person they're allegedly featuring in this
soap opera documentary is merely 'a person of interest', and after 2 years and 6 months investigation at a cost £6 million and counting, they don't know who he is yet. If he ever existed, that is.
The 30-second promo clip shown by the BBC countless times yesterday is not a promising sign.
The child carried the wrong way round according to Jane Tanner's discredited evidence.
Madeleine's bed laying against built-in-cupboards - inaccurate.
A bright shaft of light on Madeleine's bed - inaccurate.
If there are at least three basic errors in a 30-second clip, goodness knows how many there will be in a 30-minute programme.
It's hardly surprising that people are already 'phoning the BBC on 03700 100 222 to complain.
I'm surprised that the McCanns themselves haven't complained about these inaccuracies.