Here's a selection of the best high definition content available on UK TV today.

Chat

Guests on Friday Night with Jonathan Ross (10.35pm, BBC HD) include Sir David Attenborough, Emily Blunt and Clive Owen, with music from U2.

Comedy

Not Going Out continues at 9.30pm on BBC HD, as a new and noisy neighbour annoys Lucy. Will Tim and Lee rustle up the courage to complain to him?

Free Agents (10pm, Channel 4 HD): After Helen finds Alex sleeping in his car, his day gets even worse when their boss tells them that an old friend and rival agent has died, and that they must attend the funeral.

Here's a selection of the best high definition content available on UK TV today.

Comedy

The Green Green Grass reaches its penultimate episode tonight at 8.30pm on the BBC HD channel. Marlene has some of her old bric-a-brac valued when the Antiques Roadshow team visits Ludlow.

Documentaries

Billy Connolly: Journey to the Edge of the World (9pm, ITV HD) sees the comedian heading north to Baffin Island, home of the hardy Inuit, on his journey across Canada.

Sky has announced the Vive La France season of French films will screen on Sky Arts HD during March, hosted by Antoine De Caunes.

It will include the high definition premieres of four films from director Jacques Tati.

Vive La France with Antoine De Caunes will commence with Orphée on Saturday 7th March at 10.35pm.

Jacques Tati films to be aired (dates to be confirmed) are Les vacances de monsieur Hulot, Jour de fête, Mon Oncle and Playtime.

Another five films will be aired during March: Love me if you Dare, Écoute le temps, La Belle et La Bête, Cyrano De Bergerac and Strayed.

Here's a selection of the best high definition content available on UK TV today.

Documentaries

The third part of Nature's Great Events (9pm, BBC HD) looks at The Great Migration, tracing the bleak outlook for a pride of lions and their cubs in the Serengeti, when the trek to fresh pastures by wildebeest and zebras begins. With David Attenborough.

Drama

Desperate Housewives continues on Channel 4 HD at 10pm. Wisteria Lane intrigue resumes as police arrest Porter over the fire at the night club, and Bree discovers Andrew's boyfriend is a gay porn star.

Here's a selection of the best high definition content available on UK TV today.

Comedy

Shameless continues at 10pm on Channel 4 HD. Karen and Jamie's relationship is shaken.

Drama

Damages continues tonight at 11.55pm on BBC HD. In Burn It, Shred It, I Don't Care, can Ellen lure Tom into making an illegal payment to a plaintiff?

Mad Men continues at 10pm on BBC HD. Don tries to get a comedian to apologise when a joke goes down badly at a promotional shoot.

Here's a selection of the best high definition content available on UK TV today.

Documentaries

Tonight's Who Do You Think You Are? (10pm, BBC HD) follows Zoë Wanamaker. Zoë knows that her American actor father Sam fled to the UK at the time of the anti-communist witch hunts in the 1950s, when she was three. But a visit to the FBI's Washington headquarters reveals the extent of the risk he would have faced had he stayed. In Chicago, Zoë finds out how a series of tragedies suffered by her grandfather Maurice, a Russian émigré Jew, may have influenced Sam's politics.

Drama

Series three of Heroes resumes tonight at 9pm on BBC HD. In A Clear and Present Danger, the heroes are trying to build new lives after the explosions at Pinehurst and Primatech.

Alternatively, there's a new series of Law & Order: UK (9pm, ITV HD) -- starring Bradley Walsh. A tragic death is uncovered during the evacuation of a hospital.

Being Human continues at 11.15pm on the BBC HD channel.

Here's a selection of the best high definition content available on UK TV today.

Chat

Tonight's guests on Friday Night with Jonathan Ross (10.35pm, BBC HD) include Micky Rourke, Jason Manford and Will Young, along with music from The Cure.

Comedy

Not Going Out continues at 9.30pm on BBC HD, as Tim and Lee try to organise a surprise party for Lucy's 30th birthday. Their ideas of what makes a good bash differ wildly.

At 10pm on Channel 4 HD, Free Agents sees Helen posting Alex's details on a dating website.

Thanks to a fault that could be gradually degrading the performance of the hard drive, Sky has chosen to recall around 90,000 Pace-manufactured Sky+ HD boxes.

It's a matter of build quality and internal cabling according to Pace, with batch versions affected being 9F3001, 9F3002, 9F3003 and 9F3004.

As compensation for the upheaval, which will include the contents of the existing hard drive being lost, customers will get three months' free subscription to Sky HD pack, worth about a tenner a month.

(Via Which?)

Here's a selection of the best high definition content available on UK TV today.

Comedy

The Green Green Grass continues on BBC HD at 8.30pm, as Boycie decides to write an autobiography as a future legacy.

Documentaries

In a new four-part series, Billy Connolly: Journey to the Edge of the World (9pm, ITV HD), the comedian sets off on an epic journey across Canada, by way of the fabled Northwest Passage.

Meanwhile, Channel 4 HD at 9pm shows Cutting Edge: Britain's Cojoined Twins: Hope and Faith. Eighteen-year-old Laura Williams and her husband Aled found themselves in the media spotlight after their cojoined twins, Hope and Faith, were delivered at Great Ormand Street Hospital in November last year.

Or, on the BBC HD channel at 9pm, Penelope Keith and the Fast Lady sees the actress retracing motoring pioneer Dorothy Levitt's 1905 journey from London to Liverpool.

Here's the pick of tonight's high definition fare.

Comedy

Shameless continues tonight at 11.05pm on Channel 4 HD, as Monica turns to hypnotism.

Documentaries

Nature's Great Events (9pm, BBC HD) looks at The Great Salmon Run. Every year, hundreds of millions of salmon return from the Pacific Ocean to the mountain streams of west coast Canada and Alaska where they were born, to spawn and die.

Not a huge selection of high definition programming tonight, but here's the pick:

Documentaries

Horizon (9pm, BBC HD) tonight asks "Can We Make a Star on Earth?" Nuclear fusion, the process that powers the Sun and the stars, continues to elude humankind. Professor Brian Cox assesses the past, present and future of our quest for the ultimate source of energy, witnessing a fusion bomb testing facility in action in the USA before, in South Korea, clambering inside the world's first super-cooled, super-conducting fusion reactor.

Drama

Series two of Damages begins tonight at 11.45pm on the BBC HD channel. In "I Lied, Too" an old acquaintance of Patty's reappears.

Films

Pick of the high definition films on the Sky network tonight include Parenthood (2am tomorrow, Sky Comedy HD), The Matrix (8pm, Sky Drama HD), Hannibal (11pm, Sky Sci-Fi/Horror HD) and Platoon (11.35pm, Sky Screen 1 HD).

Here's a selection of the best high definition content available on UK TV today.

Documentaries

A new four-part series begins tonight at 7pm on BBC HD. Richard Hammond's Engineering Connections looks at the "Super Jumbo" Airbus A380.

Tonight's Who Do You Think You Are? (9pm, BBC HD) follows chef Rick Stein as he sets out to explore the life of his father, a manic depressive who committed suicide in the 1960s.

Drama

Being Human continues at 10.30pm on BBC HD, as Mitchell befriends a boy and his mother.

Don't let the date put you off watching a bit of British high definition telly today. Here are the highlights.

Chat

Tonight's Friday Night with Jonathan Ross (10.35pm, BBC HD) features Dev Patel, Michael McIntyre, Morrissey and Emily Mortimer.

Comedy

There's comedy with Lee Mack and Tim Vine in Not Going Out tonight at 9.30pm on BBC HD. Lucy discovers a side to herself that she never knew existed when Lee and Tim invite a lesbian couple over for dinner.

New comedy begins on Channel 4 HD at 10pm in Free Agents. Starring Stephen Mangan and Sharon Horgan, it charts the on-off romance between two talent agents who are going through emotional crises.

Here's a selection of the best high definition content available on UK TV today.

Comedy

Back-to-back comedy from 8pm on BBC HD with the last part of Life of Riley followed by The Green Green Grass.

Documentaries

Piers Morgan on... continues with a look at Hollywood. With one in three shows piloted in Hollywood last year featuring a British actor, the presenter takes a trip to LA to find out the key to success overseas, talking with Sharon Osbourne, Vinnie Jones and Scary Spice Mel B. 9pm on ITV HD.

Here's a selection of the best high definition content available on UK TV today.

Comedy

Shameless shows again at 11.05pm on Channel 4 HD.

Documentaries

BBC shows the first part of Nature's Great Events tonight at 9pm on BBC HD. This episode looks at The Great Melt, as every summer, Arctic ice recedes and opens up three million square miles of ocean and land to millions of animals. How do polar bears survive what is for them the toughest time of the year?

Here's a selection of the best high definition content available on UK TV today.

Comedy

Shameless is on Channel 4 HD at 10pm followed by The Big Bang Theory at 11.05pm and My Name is Earl at 11.35pm.

Documentaries

Horizon (9pm, BBC HD channel) asks "Why do we Dream?".

Drama

A major new series of Mad Men starts tonight at 10pm on the BBC HD channel.

Here's a selection of the best high definition content available on UK TV today.

Documentaries

Tonight's Who Do You Think You Are? follows newsreader Fiona Bruce as she uncovers the truth behind the mysterious death of her great grandfather during the First World War. 9pm on BBC HD.

Films

Pick of the films on the Sky network include Control (11.55pm Sky Premiere HD), Parenthood (11.15pm, Sky Comedy HD), Death Sentence (11pm, Sky Action/Thriller HD), The Godfather (11.15pm, Sky Drama HD), Blade Runner (9pm, Sky Sci-Fi/Horror HD), Analyze This (4.15pm, Sky Screen 1 HD) and The Guardian (6.40pm, Sky Screen 2 HD).

Sport

There's Live Football League action between Leeds United and Millwall from 7.30pm on Sky Sports 1 HD.

It's another big day in the world of sport, so here's a look at what high definition programme highlights we've got today.

Documentaries

There's more Time Team at 5.30pm on Channel 4 HD, as Tony Robinson and the team visit Salisbury Cathedral to study a mysterious burial site in its hallowed grounds.

Christianity: a History (7pm, Channel 4 HD) sees Ann Widdecombe looking into the troubled waters that surrounded Western Europe during the times of the Reformation, when the Church was split into warring factions and the Pope denounced.

Drama

Lark Rise to Candleford continues at 8pm on the BBC HD channel. The communities celebrate the inauguration of the clock from James Download, and Robert Timmins loses his source of income.

Wild at Heart continues on the ITV HD channel at 8.30pm (Freesat viewers only). After a rare and extremely dangerous African wild dog is captured by a farmer, Danny calls in an expert who turns out to be Alice's ex.

Being Human shows at 11pm on the BBC HD channel. Annie learns from a ghost she is in limbo because her death was unresolved.

It's a pretty big day in the world of sport, so here's a look at what high definition programme highlights we've got today.

Documentaries

Time Team (7pm, Channel 4 HD) sees Tony and the team unearth a tale of murder, suicide and heroism when they take their tools to Risehill, North Yorkshire.

Films

Scoop (10.45pm, BBC HD channel) stars Woody Allen, Hugh Jackman and Scarlett Johannson. American journalist Sandra Pransky is told by the spirit of a dead reporter that aristocrat Peter Lyman is the serial killer who's been terrorising London. But is her unusual source accurate?

Modern take on the classic film The Italian Job shows at 9pm on Channel 4 HD. Starring Mark Wahlberg, Charlize Theron and Edward Norton.

Pick of the films on the Sky network include Control (11.55pm, Sky Premiere HD), Me, Myself & Irene (10pm, Sky Comedy HD), The Insider (8pm, Sky Modern Greats HD), Spider-Man 3 (11.10pm, Sky Sci-Fi/Horror HD) and Transformers (10pm, Sky Screen 1 HD).

There's plenty of ways to sell Sky's high definition satellite TV service to people, but one of the latest is to try to prove that watching certain shows in HD can stave off winter depression and make people happier.

Psychologist Donna Dawson has created a Happier Days TV Guide listing high definition programmes available on Sky that will allegedly improve mood and make the viewer feel more positive, happy, excited or relaxed.