Tim and Naomi search the natural world for all things weird. They look at a moose in Norway that got stuck in a tree and an elephant seal in Rio de Janeiro. Show more

Ed Petrie and friends go on an offbeat road trip across the UK, taking in a stone-stacking championship, an airplane museum and a song about Crumlin Goal in Belfast. Show more

Joe and Meryl look back at all the amazing dens built throughout the series and reminisce about the great kids, the tense surprises and the big reveals.

Relive some of the best behind-the-scenes action on Blue Peter in this episode. Show more

Animated short film. When an alien presence is detected in Susan's hometown right before Halloween, the team is dispatched to investigate. Show more

Steve Backshall and the crew head for the island paradise of Sri Lanka in search of two massive predators and Steve attempts to free dive with a blue whale. Show more

The competition becomes more intense as the remaining candidates are deprived of oxygen to see if they can recognise the signs of hypoxia, critical for an astronaut on a spacewalk. Show more

Veterinary science series. Vets use keyhole brain surgery deep in the jungle, remove an elephant's tusk and fit a prosthetic tail to a dolphin. Show more

Documentary revealing the wildlife of the Scottish Highlands, seen by film-maker Fergus Beeley. Featuring rare black-throated divers and white-tailed sea eagles. Show more

Four chefs representing Wales compete. Dishes include a homage to the Welsh legend of Twrch Trwyth with a slow-cooked pig's cheek starter. Show more

The remaining chefs cook their next courses, including a Willy Wonka golden egg dessert. Show more

Hazel Irvine introduces a quarter-final match from 2014 between Neil Robertson and Judd Trump, during which Robertson completed a century of centuries in one season. Show more

Alistair McGowan looks at the legends of the green baize who helped make snooker both a national obsession and a television phenomenon. Show more

The 11 remaining sewers return for holiday week and are challenged to create palazzo pants, beach cover-ups and colourful shirts. Show more

Scripted comedy drama about how the legendary creators of Dad's Army overcame BBC management scepticism, focus groups and cast constipation to get the much-loved show to air. Show more

Classic wartime sitcom. Captain Mainwaring's platoon decide to perform a morris dance to raise funds for the Walmington-on-Sea Spitfire fund.

Michael Portillo travels through the Socialist Republic of Vietnam. Near the formidable imperial city of Hue, Michael meets milliner Mrs Ngo, who teaches him how to make the iconic conical hat. Show more

Drama. Author Juliet Ashton receives a letter from a Guernsey farmer inviting her to attend his literary society. What Juliet discovers on the island leads to her staying much longer than planned. Show more

Celebrating Lee Miller, a model turned photographer turned war reporter who defied anyone who tried to pin her down, put her on a pedestal or pigeonhole her in any way. Show more

Using interviews, archive footage and reconstruction, this documentary looks at the Air Transport Auxiliary, a band of female pilots who aided the war effort in World War II. Show more

Offbeat comedy. Thrown out of home and with barely any money, a young call centre worker resorts to sleeping at the same humdrum office he spends his days. Show more

Highlights of programmes on BBC Two.