Though the fuzz of analogue television (once you've had digital, it's hard to go back, even temporarily), I watched the BBC programme 'The secret life of twins', shown over two nights last week.

I don't know of anyone that watched the programme and didn't get choked up watching the two little Chinese girls, adopted by Western families and brought up in two completely different countries (America and Norway), briefly reunited at the age of six. Despite spending most of the lives apart, they had an instant bond, shared a number of mannerisms and even started dressing the same after a couple of days together. They didn't speak the same language, yet they soon understood each other. The Chinese authorities did a terrible thing, separating them when they were babies, but the adoptive parents and the girls themselves will clearly make sure that they stay in touch.

I'm a Mum of identical twins and I'm only just getting my head around what it means. R and G are totally normal to us. It's only when I watch programmes such as this that I realise how special they actually are. Apparently, a half of one percent of the world's population is made up of identical twins. That blows my tiny mind.

Other aspects of the programme irritated me though. Once again, the different types of identical twins were not explained. The differences between fraternal and identical twins were touched on briefly but hardly anyone knows or understands the categories of twins. I won't explain them here, but read this if you want to know more: http://community.babycentre.co.uk/journal/georgi22/308855/the_start_of_a_momo_twin_journey

Also, the programme focused far too much on a set of male identical twins who were just the sort of blokes that I can't stand. If they had attended my school, they would have received the beatings they so richly deserved! Yes, aspects of their story were interesting: they were both doctors, both well-travelled and high-achievers. Yet the programme homed in on their ability to argue, mostly over their fitness and weight. They annoyed me almost as much as those dreadful twins on the X-Factor, urgh.

I was pleased that the programme was given a prestigious slot on BB1 at prime time (9pm) and if you didn't see it, I would urge you to seek both parts out on the iplayer. At least the programme makers tried to base the programme on scientific facts - unlike the ITV programme on identical triplets last year ("Oh look! Identical triplets! Don't they look funny?!" ) and the sections on epigenetics were fascinating.

Of course, R and G are fascinating to us because they are ours, and if we didn't find them amazing there would be something wrong with our relationship with them. Just occasionally though it's good to have a reminder of how interesting they must be to everyone else.