Terrestrial
Unreported World Channel 4, 7.35pm
Blood diamonds may command all the media attention but there's a far cheaper commodity, bought by millions of Britons every week, that's fuelling a violent conflict in west Africa: chocolate. Reporter Evan Williams and producer James Brabazon investigate civil-war-torn Ivory Coast.

Timewatch - The Hidden Children BBC2, 9pm In July 1942, the Vichy government in France collaborated with Nazi Germany to round up Jews and send them to concentration camps. However, many ordinary French people risked everything to save thousands of lives - particularly those of children. Timewatch features four such stories. Rachel Psankiewicz's begins in Paris, where her mother forced them to separate. At first, young Peter Fiegl enjoyed the adventure of the war but, after his parents were arrested, he moved from one hiding place to another. After surviving with his brother, Alfred, Benno Ginsburg was sepa-rated from him in 1942. And Suzanne Rappoport reveals how she was rescued by a neighbour, who pretended she was her own daughter.

Peep Show Channel 4, 10.30pm
Mark is still having doubts about marrying Sophie, so he joins a gym in order to spend as much time away from her as possible. Unfortunately, his personal trainer takes exercise extremely seriously. Meanwhile, Jeremy learns that his ex-wife-of-convenience, Nancy, has also started working at the gym. Wanting to get back with her, he takes a job as a cleaner.

Digital
The Train Film4, 6.25pm
Occupied France, 1944: Oberst von Waldheim wants to send looted modern paintings - ones the darned Nazis labelled degenerate - away from Paris before the Allied forces liberate the city. He persuades his bosses to give him a train. Labiche (Burt Lancaster), a French railway official, is asked to assist La Resistance in stopping the train - but he is unwilling to risk the lives of his workers for art. Then his old friend is shot by the Germans

Close Encounters of the Third Kind Film4, 9pm
Steven Spielberg's Oscar-winning epic, with Richard Dreyfuss and Teri Garr as two ordinary American citizens caught up in a secret American investigation into UFOs. This culminates in the first contact between humans and beings from another galaxy. As the film sold itself: "Close encounter of the first kind - sighting of a UFO. Close encounter of the second kind - physical evidence. Close encounter of the third kind - contact. We are not alone!"

The Pelican Brief TCM, 9pm
Two Supreme Court justices have been assassinated.

One lone law student - played by Julia Roberts - has stumbled on the truth.

An investigative journalist (Denzel Washington) wants her story. Everybody else wants that lone law student dead A genuinely excellent suspense movie, akin to other movies based on John Grisham novels - but pay close attention. Most of the film's suspected perps dress alike - and there are a lot of them.

Radio
The Afternoon Play: The Wrong Hero? Radio 4, 2.15pm
Actor Leslie Howard, the quintessential Englishman, became an international star with his role in Gone with the Wind. In 1943, he left Hollywood to make a series of patriotic broadcasts. While travelling in a commercial airliner, he was killed when the plane was shot down by a German squadron. Among the dead was Howard's business manager - who looked remarkably like Churchill. The play draws on wartime files.