In a month’s time, the award-winning TV series Friends will celebrate the 20th anniversary of its first ever episode. The last episode - which, believe it or not, aired in the US as long ago as 2004 - was watched by more than 50 million people. If it had never come to an end (oh, how we can dream), Ross's son Ben would be 20 years old, Emma would be 12 and the triplets would be turning 17 in October. If only.