A friend suggested that I have a look at a Sims 3 experiment called Alice and Kev. It tells the story of a homeless girl and her father, sleeping on park benches and eating on the charity of their neighbours.
Although it started off as a bit of a laugh, it quickly became a very touching drama that raised social awareness of real-life issues. The whole run is not very long, but the author is both a good writer and a great shot with the Sims 3 camera. I found it very touching and recommend you take a few minutes to read it.