YOU cannot imagine JFK embracing it. Too brief. Reagan, “the great communicator” might have been intrigued, while Obama sometimes gives the impression he can take or leave it. But Donald Trump, now there is a Twitter President if ever there was one.

As the documentary Trump in Tweets (BBC2, Sunday) shows, the man with 83.5 million followers has exploited the social media platform like no other politician. He was an early adopter, signing up for an account as a way of marketing his latest book. Back in the old days of 2009 it was someone else pressing the keys: Trump dictated all his tweets. He didn’t begin to fly solo till 2013, and then the fun really started.

Samantha Anstiss, Katherine Partick and Emeka Onono’s documentary covers all the well-known Twitter storms that Trump has been in the eye of, mostly because he started them. According to various talking heads, Trump’s obsession with Twitter has changed the course and style of democratic debate, and not for the better.

With its pumping rock music, fast editing and short attention span, it should be no surprise to learn that Trump in Tweets made its debut on BBC3. That also accounts for its too long run time of 75 minutes. It’s an interesting subject, but not that interesting. More of a bore is the not terribly good Trump impersonator who reads out the tweets, and the equally duff lookalike shots. If you can grin and bear those, worth a dip into.

A few weeks ago I inflicted my Glastonbury anecdote on readers (woman, train, mud, stink, stomp off to next carriage). Here’s another yarn that would have Peter Ustinov weeping (with boredom). The title is The Only Time in My Career I Was Late for an Interview. Ever.

It was the Edinburgh Festival and I made the rookie mistake of taking the train through to interview Miriam Margolyes. Far from being an “express” service as advertised, the train stopped for everyone and everything. At one point it came to a halt in 1956. So I was late, horribly late. Having heard MM was a no nonsense type I was fully prepared to receive a telling off.

She could not have been nicer, calming me with a Coke and a packet of crisps while I took several hours to get my breath back (I ran from Waverley). Sweetheart she was, and a great interviewee.

All that was before she became a citizen of Oz, as we learn in Miriam Margolyes: Almost Australian (BBC2, Friday, 9pm). I don’t think there was a connection between meeting me and moving to another continent, but we shall leave the possibility hanging in the air, like a dingo’s cries at dusk.

Although she has been a visitor for 40 years and her partner, Heather, is Australian, Margolyes has always wondered how well she really knows her adopted homeland. Hence the self-dubbed “78-year-old Jewish lesbian” getting in a mobile home to spend two months on a 10,000 kilometre journey through the country. It’s a mobile home because, as everyone who has seen Ms M’s other documentaries knows, she does like to have a loo nearby.

“I’m old, I’m rickety, I’m arthritic, but, you know, you’ve got to get out there,” she declares. Quite.

Her interview style ranges from direct (“Do you pee in the sea?” she asks an elderly gentleman swimmer) to full on Godzilla (“What happens if you want to make love?” she inquires of a dad travelling in a mobile home with his wife and kids). But she knows when to be painstakingly gentle, as when she chats to a young man who came from Afghanistan to Australia as a child. He travelled alone. Had to: his parents had been killed in the war. For him, the Australian dream was real. “I’m safe here. I’m not going to die tonight.”

Well-researched and clear-eyed, Almost Australian is the best kind of travelogue, one that surprises and delights but isn’t afraid to dismay now and then.

Chernobyl (Sky Atlantic, Friday) pops up in the schedules again. The story of the meltdown at the titular nuclear plant and attempts by the Soviet authorities to cover up the disaster made for one of the most impressive dramas of the past decade.

Those who missed it first time around can see what all the fuss is about ahead of the Bafta TV awards at the end of this month. The mini series has 14 nominations, including best leading actor for Jared Harris and best supporting actor for Stellan Skarsgard. Both are brilliant as a scientist and Communist party boss respectively, as is Emily Watson, above, the expert who dares to tell truth to power.

A harrowing watch, but it is gripping, authentic, unforgettable drama that raises the bar for anything that dares to follow.

Trump in Tweets (BBC2, Sunday, 10pm); Miriam Margolyes: Almost Australian (BBC2, Friday, 9pm); Chernobyl (Sky Atlantic, Friday 9pm)