BBC Four HD

When Hyacinth gets passionate about art, Daddy decides to join the Foreign Legion, and, as usual, Hyacinth's scruffy family let her down at the moment she's trying to make a good impression.

Victor is unable to sleep, and things get so desperate that he contemplates opening Ronnie and Mildred's Christmas present from last year.

Dr Helen Czerski examines the hottest natural phenomenon on the planet: lightning. Bolts of lightning five times hotter than the surface of the sun strike our planet over three million times every day, and yet relatively little is known about this force of nature.

Now that the rambling roses have finished flowering, Monty turns his attention to pruning and tying in new growth for a good display next year. On the 20th anniversary of the death of Geoff Hamilton, Adam Frost returns to the famous `Gardeners' World' location, Barnsdale, to pay...

Geoff Hamilton, Margaret Waddy and John Kelly present a programme from Barnsdale. Early August is an ideal time for propagation, and with this in mind, the team shows how to take softwood and semi-ripe cuttings and how to build a do-it-yourself propagator. Fuchsia expert John...

First shown in 1998 as a tribute to TV gardener Geoff Hamilton, this programme tells the history of the gardens he created in Barnsdale in Leicestershire.

David Attenborough looks at the history of reptiles, the first back-boned creatures to solve the problems of living high and dry on the land. Their waterproofed skin and sealed eggs enabled them to once rule the world.

BBC FOUR is the BBC channel for people who want more. More depth, more range, more to stimulate the mind.