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The Gaby Roslin Show Sat 9pm C4

Infamous Addresses Sat 10.30pm C4

Triumph of the Nerds Sun 7pm C4

Culloden Sun 7.25pm BBC2

The South Bank Show Sun 11.15pm ITV

Gaby's looking uncharacteristically po-faced in the publicity shots for The Gaby Roslin Show (Sat C4), like a child pretending to be grown-up or a dimwit trying to look brainy. Not that Gaby is either childish or stupid. She is, though, famous for being blonde, formerly of The Big Breakfast, weeping openly, and for being so transparently nice that she makes all those other breakfast TV presenters seem merely cynical.

She's our queen of hearts, and like dear Diana, she's having problems repositioning herself. The Real Holiday Show was an autocue reading job - but now she's been given a chat show, in an exercise hyped as reviving the chat show genre. Not that the chat show ever went away - it just went post-modern, with Letterman and Conan O'Brien in the States, and Jonathan Ross and Dame Edna over here. Whether it needs to be dragged back into the Parkinson era is debatable, but the first guests don't auger well either way. Des O'Connor wouldn't get out of bed for the ubiquitous Eddie Izzard or Kate Winslet (of Sense and Sensibility). Ike Turner is the only potentially interesting guest. Can Gaby handle it? Tune in and see.

By far the most interesting programme this weekend is more than 30 years old. The enduring power of Culloden (Sun BBC2), Peter Watkins's 1964 pseudo documentary in which the 1746 Battle of Culloden is subjected to TV documentary techniques, underlines what a terrible loss to British television was Watkins, who gave it all up after the BBC banned his similar treatment of a nuclear attack on Kent, The War Game. Culloden is being shown to mark the 250th anniversary of the battle in which Charles Edward Stuart was routed by the Hanoverians and assorted Protestant Scots (the line-up wasn't unlike a Celtic/ Rangers derby in some ways - except Celtic, unlike Bonnie Prince Charlie, don't have any French players). This innovative TV film is still strong meat today. It must have seemed even stronger to the generation before the Vietnam War.

Meanwhile, they've been pulling down the gym in Dunblane, and Gloucester Council are considering demolishing 25 Cromwell Street. Plenty of other homes that are the sites of notorious murders are now, however, re-inhabited. Infamous Addresses (Sat C4) finds out what it's like to live in the building where John Haigh dissolved bodies in acid, where George Smith drowned his wives, or where Jo Orton was bludgeoned to death by Kenneth Halliwell. John Christie, resident of 10 Rillington Place, is still on some company mailing lists apparently, depite the fact that Rillington Place met a bulldozer a quarter of a century ago.

One wouldn't mind living in Sting's rock star country mansion in Wiltshire. The South Bank Show (Sun ITV) manages a better snoop round this mellow- bricked Jacobean pile than a recent Hello! feature, and Melvyn (having a bad hair day) gets quite a good take on this strangely Puck-ish man.

Can I suggest to the reader who wrote wondering about the contemporary meaning of the term "anorak" and "techno-nerd" to tune into Triumph of the Nerds (Sun C4), where all will be explained. This three-part series tells how young male techno-enthusiasts were the driving force behind the revolution that is putting personal computers into every home in the land. One such - Bill Gates - kicks off the series.

The big picture


Sat 10.05pm ITV

Peter Weller, with his redoubtably expressionless, though wonderfully sculpted lips and chin, was the perfect casting choice for the helmeted cyborg law enforcer in Robocop. Paul Verhoeven's 1987 sci-fi film basically steals the idea of Judge Dredd and swamps it in vicious media satire. Weller plays a cop murdered by an evil gang, then brought back to life as a machine to combat the forces of lawlessness that are rampant in the film's bleak vision of future capitalism. Verhoeven's primal, crude energy is perfect for the cartoonish story.

The big match

US Masters

Sat 8.05pm, Sun 9.05pm BBC2

As the cashmere-sweatered contestants tee up for the final rounds of the 60th US Masters, in the verdant setting of Augusta National, there will be several within driving distance of the coveted Green Jacket. Since Augusta's greens, traditionally lightning-fast, are believed this year to be even faster, the advantage will be with the great putters such as Faldo. And what of gentle Ben Crenshaw (above), last year's champion? According to the bookmakers, he's not even in the running - but last year he took the prize as a 50-1 outsider. Anything can happen.