This wasn't only the series finale, but the last ever episode of Camelot, since the American Starz network has decided to scrap plans for further seasons. It's not hard to see why. After a fairly promising start, Camelot spent several instalments staggering around aimlessly, as if writers and directors had been beheaded by King Arthur's Excalibur. Annoyingly, this tenth and final episode offered belated flashes of what the show might have been.

Dan, a tall ginger streak of entitlement, had an issue with the hygiene. Channel 4 were about to lift him out of a five-star hotel in the Gambia and send him off to see how the other half lives. “They’re not going to be as clean as us,” he predicted nervously. Dan worried that he might have to survive sans moisturiser and hair gel. He hadn’t been warned about the lack of cutlery. And of loo roll. Nor that you approached each problem with the same manual solution.

If I'm being honest, I never saw the charm of Alan Bennett's Talking Heads. Too many quiet disappointments, too much capital-A Acting. They lacked naturalism in presentation and content, whereas Double Lesson, from Channel 4's First Cut series of quirky documentaries and quasi-documentaries, had naturalism to spare last night.

The leap from BBC Four to Channel 4 is more than the flick of a switch. Migrating from the BBC’s digital channel to its terrestrial broadcast has transformed the Danish noir drama Forbrydelsen. It's now in English. It’s become American. Copenhagen has been banished. The alchemist responsible is US TV network AMC. Channel 4’s screening of the US remake of The Killing will attract more viewers than BBC Four ever could, but it’s impossible to watch the Seattle-set makeover without thinking back to the original

With The Tudors recently departed from BBC Two, the kindly Channel 4 has stepped in to fill the gap with this new cod-mythological romp through a Middle Ages that never existed. Funnily enough, it comes from the same Irish-Canadian production consortium that cooked up The Tudors, and shares similar attitudes to casting, production values and dialogue.

Crikey, no gongs whatsoever for ITV1's Downton Abbey, but you can't grumble about Sherlock lifting the Best Drama Series award at last night's Baftas. Steven Moffat and Mark Gatiss's ingenious update of Conan Doyle for BBC One was one of 2010's telly highlights, and you might have thought it would have earned the Leading Actor award for Benedict Cumberbatch.

Let us begin with the nots. Fashionably weird is not enough. Edgy, whatever that means, is not enough. The repeated use of the word “vagina” is not enough and semi-improvised ensemble acting is not, in itself, quite enough. These were just some of the many not-thoughts which ran through my mind during the opening episode of the much-touted Campus. So what did picky me want? I wanted funny.

It would take the cunning of the insane to invent the British railway network. Privatised 18 years ago, it offers the worst of all worlds - persistent overcrowding and cancellations, outdated rolling stock and fares rising vertiginously as services grow steadily more uncomfortable, while the taxpayer still has to stump up billions to keep this wheezing Heath Robinson nightmare functioning at all.

Why were any of us watching Lily Allen: From Riches to Rags last night, about the pop star's move from selling millions of tracks to stacks of vintage clothes? It was not because we need a lesson in the hardships of starting up a business - Allen bought all the stock out of her musical profits and her office was thick with roses. No, it was because the real intruded into a reality show: this was not car-crash TV - it was miscarriage TV.

By the trail of dead shall ye know Detective Superintendent Peter Boyd, who bounces back irascibly for a ninth and final series of Waking the Dead. For once, British TV has the edge over its American counterpart. While Jerry Bruckheimer's US series, Cold Case, always feels dragged backwards by its clunking reconstructions of ancient crimes (especially the device of using young actors to impersonate now-elderly perps in their prime), Waking the Dead manages to catapult its back-catalogue felonies vividly into the present.