And so to the fourth (and - sad face - final) series of Catastrophe. Rob (Delaney) is in a neck brace and an Alcoholics Anonymous programme and an enforced charity shop job. Cue near-knuckle (but perfectly judged, a truly fine act) observations on cerebral palsy. Sharon Horgan's smartly pissed off, smartly resenting him, smartly loving him. Despite. And if you ever need a faintly filthy and bang on-the-money joke about Radiohead to perk up a self-help session - let's face it, who hasn't? - the terrific Julie Hesmondhalgh is just yer lass for it: a welcome, dippy, addition to this achingly human, filthily human, comedy. We will so miss it.

There are so many things to love about Catastrophe, not least the way it pays attention to the smallest details in the matter of relationships; when Sharon rings Rob's mobile, for instance, she still comes up as "Sharon London Sex". But what I mostly love about it is Sharon, from the stubborn set of her jaw, which is like Tower Bridge when it's halfway up (or down), to the way she drinks a margarita (as if she is eight, and it is Tizer). I love the way she picks a fight - I'm not very courageous like that - and I love the way that, once she's started, every accusation instantly spirals into a flight of fancy; her pugnaciousness, being so outlandish, is delightful rather than tedious, as it would be in almost anyone else. Above all, I love it when she sulks. Sharon Horgan's bottom lip: what a magnificent thing it is, and with such good comic timing, too.

Catastrophe, Series 4, Channel 4 review

There are five more episodes before Catastrophe ends, and it promises to be a bittersweet goodbye, as new characters join the fray.

Catastrophe review

Rob Delaney and Sharon Horgan are utterly at home together.

Still funny but slightly off the boil judging by this series four opener, Sharon Horgan and Rob Delaney's comedy is starting to cram in just a little too much catastrophe: Rob has a car crash that somehow leads to him attracting a spooky stalker (the evergreen Julie Hesmondhalgh) and Sharon gets caught shoplifting.

Catastrophe - series 4, episode 1 review

Catastrophe was back to take the rom out of romcom and twist it into strange shapes, before putting it back again at a skew-whiff angle.

Catastrophe, season four review

Sharon Horgan and Rob Delaney's comedy is spiky, beautifully confident, nimble, quick and exceedingly funny - but it's right that this is the last series.

TV preview: Catastrophe, C4

This is the third sitcom I've reviewed in two days and with the greatest respect to BBC Three's Cuckoo and BBC Two's Semi-Detached, which are both extremely watchable, Catastrophe is by far the best of the trio.