Now this is a tough one to answer. I can't really remember all the episodes back from when Simon first joined the show (I hope the BBC brings them out on DVD soon!) but obviously the eps that dealt with the death of Harry's wife, and the aftermath, were very strong storylines and did a lot to shape Harry's character. Favourite eps from the current series... well, the one that immediately springs to mind is (I forget the title, sorry) the show where the little girl had been trapped in the freezer and Harry and Selena had to battle to resuscitate her - there was a good interaction between them, and it also paved the way for the Harry/Ellen relationship. But I also loved the recent episode with Nathan's mum being admitted to A&E; top acting from Simon, and no tie!