For the first time, ATV's Discovering Monday documentary double bill takes a local turn this evening with the award winning documentary, In Search of the Dragon's Tail (World, 9.30pm). The film was made by local film-makers Haymann Lau and her partner Stuart Rankin, who were originally inspired to make a documentary about Maurice Chan, the disabled busker-flautist who usually works the bridge to Immigration Tower in Wan Chai. But Chan grew up in the maze that was the Walled City, and eventually his memories of the place drew the film-makers back to that place, destroyed six years ago. Today, the site is a rather nice park, back then, it was the proverbial den of iniquity, poverty and misery. Technically it fell into neither Chinese nor British legal jurisdiction, and was an embarrassment to the authorities for years. It was a haven for crime, and for ghetto-like housing conditions, and it was also home to 40,000 people, who had to move out when the bulldozers moved in. Rankin and Lau sought out some of these people, and their memories bring to life the place even better than the remarkable footage and still photographs of the place. They spoke to the postman who delivered mail there, the photographer who documented the place, and Chan's family and friends, and tried, unsuccessfully to persuade two back-street abortionists to describe their work. This is not a film about the neon and Mercedes world that the Hong Kong Tourist Association would like outsiders to conjure up when thinking about Hong Kong. It covers all the topics that almost everyone, in former brighter times, chose to ignore: the plight of the poor elderly population, drug addicts, the lack of adequate housing. A film designed to stir the collective conscience, in fact. And while the commercial film industry is beating its breast and whining for government help in order to survive so it can make lots of money again, it is worth pointing out that In Search of the Dragon's Back only cost $200,000 to make. And the profits made from the broadcasting rights, including presumably the money ATV forked out for this, are donated to local hospital burns units. This decision was inspired by the Garley Building fire, which killed 40 people, and incidentally also incinerated some of the film's soundtrack. Flipper (World, 11.30am) inspired a television series which in turn inspired a generation of kids to do dolphin clicking impersonations, but otherwise there is nothing very deep about the story at all. This is the granddaddy of kid-meets-aquatic mammal movies that led directly to Free Willy, and Free Willy 2, which we saw last week, and of course the Paul Hogan remake that was released in 1996. Luke Halpin plays young Sandy, the son of a Florida fisherman who is suffering because of a fish shortage. Sandy rescues and falls for a fish-eater who he calls Flipper, which eventually means a clash with Pop. It's hardly high drama but very good holiday entertainment.