WATCHING Louis Theroux: Shooting Joe Exotic (BBC2, Monday), you had to feel sorry for old LT. He had gone all the way to America for a reunion with the “star” of Tiger King, the hit Netflix documentary, but then a lawyer’s letter arrived. That’s rarely good news.

Sure enough, Theroux was told in no uncertain terms that the man who once ran a zoo packed with tigers and other rare breeds, had signed an exclusive contract with the makers of a second series of Tiger King, as had others. So back off, LT, or face the legal consequences. The biter was bit.

It had not been like this in LT’s day. Didn’t these people know he was the one who discovered the story back in 2011? Still, it says a lot about Theroux’s talent that even when he suffers such a setback he still makes a better film than most.

Exotic, a nasty piece of work who made a fortune from abusing and exploiting animals, is now serving 22 years for plotting to kill an animal rights activist.

Shooting Joe Exotic became a wider look at filmmaking ethics and celebrity, though he bagged a scoop interview along the way with one of Joe Exotic’s brothers. Looking through the previously unseen footage from the first film, Theroux wondered if he bore any responsibility for what happened subsequently. Should he have taken this dangerous buffoon more seriously?

But as we saw, he did ask the right, tough, questions at the time, so much so that Exotic turned on him. Even then, Theroux felt the need to placate him. “Can I have a hug?” he asked at one squirm-inducing moment. Theroux, to his credit, does not let himself off lightly.

There is an entire branch of programming dedicated to helping with that ultimate FWP (First World Problem) known as HTMS (Having Too Much Stuff). Thus far it has been mostly confined to the US, with shows such as Tidying Up with Marie Kondo and The Home Edit (both Netflix), er, cleaning up.

The trend has now gone mainstream here with the arrival of Sort Your Life Out (BBC1, Monday). The concept: in one week, with the help of an outside team and a willingness to chuck what you don’t need, you too can have an organised, less stressful home.

Every show must have a gimmick. With The Home Edit it is fancy labels. Sort Out Your Life lays every item out in a warehouse, supposedly to make it easier to see everything, but also because it looks good on telly. Where to get started with the Yaku family and their 60 obsolete chargers, 3000 toys, and Nan’s old spice rack that even Nan did not use?

I have always been sceptical about these kind of tidying programmes. They have moved on a lot since the “hoarder” shows that held people in genuine distress up to ridicule, as though lifelong trauma could be put right with a couple of skips and a squirt of multipurpose cleaner.

Sort Your Life Out kept things light, though there were tears before bedtime, mostly from mum, who could not bear to be parted from anything to do with the children.

An hour was too long, and it was hard to move without tripping over a statement of the bleedin’ obvious (dust first, vacuum later, really?). On the upside, the presenter, Stacey Solomon, was a likeable sort, and the family loved their home when it was cleaned and tidied. It looked as though the weight of the rubbish they had been carrying had been lifted from their shoulders, and one month later they were still keeping the place tidy. FWP sure, but whatever gets you through the night.

The Michelangelo Code: Secrets of the Sistine Chapel (Sky Arts, Tuesday) found art critic Waldemar Januszcak in Dan Brown mode. His quest: to find the connection between the work of the title and the Waco siege of 1993. It turned out to have something to do with a hidden message, Franciscans, two popes and a talking crucifix. You know the sort of thing.

The pudding was over-egged, and the making of it unnecessarily drawn out (two hours 15 minutes), but Januszczak, like a big bear wearing a hipster leather jacket, was amusing company as he ambled through Europe, his excitable narrating style reminding me of the chap who voices Scot Squad.

Lights Up: Sitting (BBC4, Wednesday) was one of a series of plays adapted for television, this one written by and starring Katherine Parkinson (her off the IT Crowd). Three people sitting for a painter, each with their stories to tell and secrets to divulge. Very Alan Bennett, but Parkinson is as fine a writer as she is a comic actor.

In Line of Duty (BBC1, Sunday) possibly bent copper Joanne Davidson (Kelly Macdonald) was complaining about AC-12’s obsession with organised crime groups. “They must get a pound every time someone says OCG,” she moaned. Jesus, Mary and Joseph, is even Line of Duty losing the faith with Line of Duty? Hang in there people, we’ll be grand.