How much is too much of quite a good thing? They – whoever they are – always say that two series is the platonic ideal for the perfectly formed sitcom. The example forever cited is Fawlty Towers, joined latterly by The Office. To that short list you could now add Rev, which after two series ceased to be a comedy in order to become something else.

We have all learned to genuflect at the altar of Nordic noir in recent years – see The Tunnel, the Anglo-French remake of The Bridge, and the American Killing, not to mention the news that Borgen creator Adam Price and Michael House of Cards Dobbs are to collaborate. But the traffic is not entirely one-way. One series purchased by the Danish broadcaster DR is Hinterland, an intriguing and impeccably sullen crime series from Welsh-language broadcaster S4C.

As the Brockman family returns for a fifth and final series of Outnumbered, some viewers will find their hackles standing to attention at the family's extraordinary distillation of middle-class characterstics. There’s the enviable middle-class London home they live in, absurdly beyond the means of a family that seems to subsist on a single teacher’s income. There’s the tameness of their problems, this week's revolving around angst-ridden secondary school choice and the horror provoked by the eldest child Jake's (Tyger Drew-Honey) tattoo.

Man Down opens with a tried and tested sitcom premise; middle-aged-and-going-nowhere-fast Dan is being dumped by his much more mature, high-achieving girlfriend, Naomi. She's tired of his juvenile daydreaming - could a hovercraft be powered by farts? - and the fact that he lives in a flat attached to his parents' house. And he still hasn't replaced a lightbulb that blew weeks ago.

Coming to it fresh, it’s hard to imagine Father Figure as the Radio 2 serial it apparently began life as. The first episode of the six-part series is driven by what some would call "visual gags" or "physical comedy", as if writer and star Jason Byrne was so excited by the new medium that he decided to throw everything he could at the camera to see what stuck.

Count Arthur Strong, the creation of Steve Delaney, is a bumbling, stumbling has-been variety turn and self-described thespian whose ego is inversely proportional to his talent. The character, a Harry Worth lookalike who mangles his words, became a cult hit at the Edinburgh Fringe and for several years Count Arthur Strong's Radio Show! ran on Radio 4.

They say that you’re not supposed to judge a book by its cover, but I began to grow bored with Love and Marriage about halfway through the opening credits. What seemed like endless pairs of smiling, photogenic couples swung onto the screen against a twee, brightly-coloured backdrop, and I realised I was already struggling to care.

Oh dear. Oh deary dear. Oh deary deary dear. To think that Ben Elton, who has a “written and created by” credit for this pile of poo, once helped to scale the heights of British comedy as co-writer of The Young Ones and Blackadder. Five minutes into this I was thinking, “How on earth did it get commissioned?” Oh I know, because Ben Elton, who once helped create...

As the second series of Zooey Deschanel-starring US sitcom New Girl gets underway on E4, it’s an interesting exercise to revisit first impressions. I note that when the pilot originally aired, theartsdesk was not as harsh as I was on a show which, over the course of its first year, quickly became one of my favourites.

What’s this? Harold and Albert turfed out of their old stamping ground of Shepherd’s Bush and turned into West Country natives? Any change to a cherished sitcom comes at the theatre director’s peril, but a change of accent? Somehow, this sounds a jarring note more dissonant than any changes to script or action, though, in fact, Emma Rice’s adaptation has remained remarkably faithful to Galton and Simpson’s original 1962 pilot, as well as to three later episodes. These four episodes form the basis of Kneehigh’s production which premiered in Cornwall last year, where the company is based.