Our pick of this week's TV Catch Up

We start this week's look at what's been on the box over the last week with a man whose fascinations with the weird and wacky know no bounds. However, in Louis Theroux: Extreme Love on BBC Two our favourite bespectacled investigative journalist focuses not on the foibles of the few - but on the great many people that are affected by neurological conditions. In the first of two episodes on the subject, Louis is in his favoured stomping ground, the United States, to see how families cope with autism - a developmental disorder characterised by difficulties with social interaction and communication. Visiting the Developmental Learning Centre in New Jersey he sees just how challenging, uncomfortable and physically demanding dealing with the condition can be. Catch up with Louis Theroux: Extreme Love

Unless you've been residing under a rock not of this world, you'll know that there are less than 100 days until the greatest show on earth (ahem, the Olympics) takes place on these here shores. That means in a very short while the Olympic torch will be winding it's way around Blighty. These are facts that are not lost on spoof documentary Twenty Twelve on BBC Two. In the final episode of the series the Olympic Deliverance team have to put out the very flame they started when they pledged that the Olympic torch would be within the reach of 95 per cent of the population. And they win a gold medal for PR disasters when they organise a major sexual health campaign, complete with a rap song that upsets the Catholic competitors. Catch up with Twenty Twelve

Over on ITV1 Brenda Blethyn returns to our screens for a second series of crime drama Vera, based on the best-selling novels of Ann Cleeves. In the first of four standalone episodes, DCI Vera Stanhope (to acknowledge her full professional title) investigates the petrol bomb attack on the house of Sergeant Stuart Macken, which has left her former colleague badly burned and his daughter fighting for her life in intensive care. The deeper our obsessive Vera delves into the case, the darker and more unpleasant the revelations become - forcing her to face her own demons head on. At least she has long-suffering partner DS Joe Ashworth to lean on. Catch up with Vera

Back on BBC One the drama of the blind auditions is over for the hopefuls of The Voice UK. Judges Jessie J, Tom Jones, Will.i.am and Danny O'Donoghue now have the tough task of cutting the number of acts they'll be tutoring in half - from ten each to just five. That means pairing up singers from the same team and making them sing-off against each other in front of their mentor. Tough gig. And it doesn’t stop there. The reward for surviving this cull is a singing spot on the first of the live shows. It's all enough to make you think that people embarking on a music career might have it easier by just going out gigging and impressing an A&R exec in the audience. Now there's an idea. Catch up with The Voice UK

And finally, we're getting to the business end of American terror thriller Homeland on Channel 4. Nicholas Brody, played brilliantly by Brit Damian Lewis, continues to confuse the viewer as to who his loyalties are with personally, professionally and ideologically, but as far as the US government are concerned he is a model marine and a perfect patriot. In fact, he's so valuable an asset that the Vice President turns up at his house and suggests that he runs for Congress. Meanwhile, Carrie is still hell-bent on uncovering the truth and is hot on the heels of the Saudi diplomat who helped Walker. Catch up with Homeland

Don't forget that you can always keep up with your favourite soaps including Coronation Street and EastEnders. More TV Catch Up highlights next week.