In one of the great US sitcoms, Seinfeld, the mantra of the show's producers was "no hugging, no learning". Well, Parks and Recreation - which may end up occupying a similarly lofty place in comedy history - takes the opposite tack. Warm and wonderfully witty with characters and relationships that actually evolve, Greg Daniels and Michael Schur's sitcom also features TV's finest comedy ensemble. This perky, award-winning comedy has taken an absolute age to reach us, considering it debuted in the US in 2009 (where the fifth season has already aired).

Compile a list of the subjects you thought may be unsuitable for a sitcom, and it will almost certainly include a person with learning difficulties, assisted suicide and an army bomb disposal team.

It looks as if Broadchurch will reveal itself as a "town-with-murky-secrets" story, but on the evidence of this first episode we can expect it to be done with a skilful touch and a fine eye for detail. The trigger for the action is the death of 11-year-old Danny Latimer, but writer Chris Chibnall is focusing on the effect this has on family and friends as much as on the grim event itself.

A drama that opens with the disappearance in the woods of a beautiful blonde teenage girl is going to evoke memories of Nanna Birk Larsen racing away from her murderer in The Killing. A drama set in a rural English village peopled by loamy eccentrics and sozzled toffs is likely to summon thoughts of Midsomer Murders. Put ‘em together and what have you got?

It is now part of the fixtures and fittings on British television. Its original stars, once alternative comedians, have become leathery gerontosaurs of the establishment. And yet on Comic Relief the grammar of giving has been largely immune to evolution. A star – usually a comic - goes out to Africa and reports back from a community in dire need of a basic necessity to alleviate suffering and death. They mug charmingly for the camera, make friends with the children and ask for your money.

The generational time-bomb is a popular dramatic device - ITV were at it only  a couple of months ago with The Poison Tree - and new five-parter Lightfields boldly sprawls itself across three separate eras (1944, 1975 and 2012). Binding it all together is the titular location, a farmhouse in Suffolk, through which the different generations of characters pass.

It's an interesting time for Sue Perkins's coming-out sitcom to debut, coming as it does a matter of weeks after the government has begun the process of introducing equal marriage in the UK. Despite it being broadcast in a country where seemingly sexual orientation is no longer an issue, it reflects a wider reality where some people still feel unable to be honest about themselves with their loved ones or, worse, fear their lives would be made hellish by living openly as a gay man or woman.

So, Death in Paradise has harrumphed its way to another series finale. DI Richard Poole (Ben Miller) was in a grumpier mood than usual by its closing episode, contending with Fidel’s distraction as he waits results of his Sergeant’s exam, and Dwayne, as ever, diverted by the laydeez.

Stephen Poliakoff's slow-burning drama had turned into a propulsive whodunnit by this final episode, hurtling towards a resolution with panache and surprise. The five-part mini-series about a black jazz band in early 1930s high society has had the feel of an exploratory score at times. With syncopated beats and riffs decorating its unfolding narrative, the occasional scene and detail has seemed superfluous. But Poliakoff has had his reasons. By episode five, almost every character had a motive for murdering Jessie (Angel Coulby), the lead singer, or at least assisting in a cover-up.

After the nightmarish vision of justice system turned spectator sport that was last week’s Black Mirror, you’d be forgiven for feeling a little disappointed that writer Charlie Brooker hadn’t ramped up the horror at the start of the final episode of this all-too-short second series. There were many adjectives one could consider throwing at Waldo, the inexplicably popular blue cartoon bear at the centre of the action, but “horrific” probably wasn’t one of them.