Soap operas are mirrors into real life - or so scriptwriters would have us believe. But if they were, some of the characters should look, and sound, a lot less healthy. Dot Cotton, the loveable old crone from EastEnders, should be hacking her lungs up, and Fitz from Cracker should have turned yellow and flapped his hands uncontrollably from liver failure, brought on by drinking too much. In fact Fitz could have been a one-man health education message - being overweight, a heavy smoker, drinker and sex enthusiast.