Terry Pratchett – Choosing To Die (BBC2, 9pm)
The Walton Sextuplets: Moving On (ITV1, 9pm)
Glee (E4, 9pm)
Kill It, Cut It, Use It (BBC3, 9pm)

HIS fantasy world is dominated by imps, dwarves, wizards and witches, who mix freely with human beings. However, Terry Pratchett’s greatest battle in recent years has not been dreaming up more volumes of his best-selling Discworld series, but coping with Alzheimer’s.

In the documentary Terry Pratchett – Choosing To Die, the award-winning author looks at one of society’s most difficult subjects – assisted death.

Pratchett has considered taking his own life once the condition becomes too much for him to bear. He’s always been open and honest about his illness and has made sure his fans and the media have been with him every step of the way so far.

Pratchett, who received a knighthood for services to literature and who, until recently, had managed to churn out two books a year, has since donated half-amillion pounds to the Alzheimer’s Trust, of which he is a patron.

In this documentary, he meets three men with degenerative conditions, all faced with the same difficult choices that he must grapple with, as well as some of the families that have been left behind by other sufferers.

Mick has motor neurone disease and has chosen to stay in the UK and opt for hospice care, while Andrew, who has multiple sclerosis, has turned to Dignitas, a not-for-profit organisation based in Switzerland.

Pratchett finds out more about their decisions, and in Switzerland he meets Peter, who also has motor neurone disease, and intends to end his life at the Dignitas clinic.

We witness the procedures for all the clinic’s visitors and the writer sits with Peter and his wife during his final moments.

“I can’t find a shred of fear about actual death,” he said in a recent interview.

“But I do fear a protracted death and loss of senses and loss of control and total dependence on other people. Of course I do.”

AT McKinley High School, the members of the Glee club may get slushies thrown in their faces on an almost daily basis, but out in the rest of the world, they couldn’t be more popular.

Not only has Glee been a big hit with viewers, it’s also turned the cast into pop stars as they’ve gone on to rack up more US chart entries than The Beatles.

They’ve even had broadcasters fighting over them – it’s been announced that series three will see New Directions leaving E4 for Sky.

So, Freeviewers should make the most of this episode, the last in the current series, which sees the students heading to New York to compete in the Nationals.

Finn has his mind on more than the competition as he tries to win Rachel back, and Will wonders how to break the news that he’s leaving.

AS a co-presenter of Countryfile, you’d think that Julia Bradbury would know more than most about the farming process, but it turns out that the new series Kill It, Cut It, Use It was an eye-opener even for her.

The programme looks at how parts of animals that don’t end up on our barbecues or in our Sunday roasts can be put to other uses.

“In everything from beer, shampoo and soap powder to your car, bits of your kitchen and books, there is part of an animal that has been utilised,” says Bradbury.

In the opening edition, she’s focusing on cows. It transpires that while there may be no beef on your plate, the crockery itself might not be entirely bovine-free.