For his first dramatic acting role, comic Harry Hill was desperate to play the original Nutty Professor from Norman Hunter's children stories.

Swapping his trademark ear-skimming collars for Branestawm's multiple pairs of glasses, he's the perfect fit for the role in this one-off special penned by Charlie Higson - which we predict will be the first of many.

The Fast Show's Higson, a best-selling children's author, has added some modern touches of his own that should strike a chord with a brand new TV generation raised on sonic screwdrivers.

By far the most significant is the addition of a determined young sidekick called Connie (Madeline Holliday) who is fed up with being taught useless subjects at school.

Even though Branestawm may be the worst science teacher you could imagine, I practically cheered to hear Connie say that she wanted to learn about civil engineering.

As the Professor's inventions bring chaos to the village of Great Pagwell, Hill is joined by another Fast Show stalwart, Simon Day, as Branestawm's best friend Colonel Dedshott.

David Mitchell plays his nemesis, the officious councillor Harold Haggerstone who wants to shut down Branestawm's "Inventory" and Vicki Pepperdine is his housekeeper Mrs Flittersnoop.

It's all hugely silly, but perfect family entertainment nevertheless.

Advertising man and stage magician Norman Hunter first created his quintessential absent-minded professor in the 1930s, in a couple of well-loved children's books. He then took a 33-year break, reviving Branestawm in the 1970s when he knocked off a string of books of comically disastrous experiments, which became fixtures of the story-reading show Jackanory for a new generation.

Nothing much had changed: Branestawm still existed in a dreamy, madcap world where "doing science" meant blowing things up and it was understood that geniuses were exempt from normal behaviour, like dressing properly or remembering anything.

Now, science tends to mean computerised calculations and even landing a rocket on a comet does not exempt a chap from apologising for a dodgy shirt. In fact, not all scientists are even chaps. But we still have this idea - popularised by dramas like The Social Network or Sherlock - that no-one can be that clever and still be, well, "normal".

Charlie Higson, who revived another old franchise for the pre-teen set with his Young Bond books, has adapted Hunter's characters for a nostalgia-soaked family romp, nominally set in the 1930s but actually set in a delightfully artificial never-was.

Harry Hill makes his thespian debut as the eccentric academic, though it's more of a broad performance than actual acting. But he's surrounded by a capable, in-on-the-joke cast including Ben Miller, Simon Day, Vicki Pepperdine and Higson himself. A basically-modern little girl sidekick (Madeline Holliday) stands in for the hoped-for young audience, gleeful over bangs and mess but still, perhaps, getting hooked on science into the bargain.