A modest moment of TV history took place in Fry and Laurie Reunited, in which the beloved comedy duo appeared on screen following a gap of 15 years.

Interviewing each other informally in an English country manor, their mutual affection was palpable. Although it was charming seeing them in tandem again, it was disappointing that their cheerfully anecdotal conversation offered scant insight into their working process. Sadly, it wasn't that kind of show.

Instead, this was - as Fry might say - a moist, fluffy tribute to one of Britain's most exceptional double acts: a reminder that Laurie is one of the most naturally gifted clowns of his generation, and that Fry was once so much more than a cosy national treasure.

Despite their closeness, it was interesting to note their different temperaments. Now one of the world's biggest TV stars thanks to House, Laurie disguised himself behind a torrent of unsentimental quips, while Fry guffawed adoringly and spoke emotionally of their relationship.

It's tempting to draw parallels with Peter Cook and Dudley Moore: the troubled, resolutely English wit and the ivory-tinkling clown turned unlikely superstar sex symbol. But there isn't a hint of jealousy or spite between them.

As torrid as it got was when Laurie questioned Fry's memories of their first meeting and expressed concern that he was spreading himself too thin, while Fry dug heavily at the likes of Little Britain for lazily regurgitating sketches, which Fry and Laurie rarely did.

Notwithstanding a glimpse of their obscure comedy pilot from 1983, this reunion was over-reliant on familiar clips and padding. If not a squandered opportunity exactly, then not quite the summit I'd hoped for.

Tim Key: the spirit of 'Derek and Clive'

Tim Key's new comedy record recalls the glory days of Peter Cook and Dudley Moore.

Audio: Pete and Dud recordings found

Almost all the lost Peter Cook and Dudley Moore sketches from their television show Not Only... But Also have emerged in a private collection of audio tapes.

A lot of dirt seems to have been dished out about Peter Sellers since his death 30 years ago, mostly honing in on his allegedly volatile temper, family life and unpredictable behaviour on set. But, thankfully, Archive on 4: Sellers in the Attic was just a great, hour-long wallow in his eccentric, unique comedy legacy. It helped that the presenter, comedy writer and historian Glenn Mitchell is clearly a huge Sellers fan, recalling how he scoured local record shops for rare recordings when young. Amid the obvious nods to the Goons and Pink Panther series of hit comedies, the programme contained snippets that gave a real insight of a man totally unimpressed by comic convention and always willing to push boundaries. This includes recording a version of the Beatles' Hard Day's Night in the guise of Laurence Olivier, appearing as a punch drunk boxer turned action painter alongside Peter Cook and Dudley Moore, and mocking the works of poet, William McGonagall, whom he described as truly awful. Given his huge success in Hollywood later in his career, it's a little sad that he describes working with his fellow Goons "as the happiest period of [his] life" in comparison. Warts and all, three decades since his demise, Sellers remains fascinating.

Video: Lost Pete and Dud sketch re-enacted

A lost Peter Cook and Dudley Moore sketch is re-enacted with Dud (played by Adrian Edmondson) waking up screaming from a dream. Pete (played by Jonny Sweet) decides to attempt to decipher Dud's dream using Freud's theories.

The Wardrobe sketch is from the landmark television comedy show, Not Only... But Also which was largely wiped from the BBC archives.

Was it madness or arrogance that persuaded the volunteers on Pete And Dud: The Lost Sketches that they could sketch in the shadow of genius? The idea of the likes of Angus Deayton and Adrian Edmondson attempting to emulate the comedy chemistry of Peter Cook and Dudley Moore seemed like the product of a lock-in after the Baftas. In other words, it should never have survived the cold light of day.

Yet, though it was light on belly laughs and clearly in thrall to its source material, Pete And Dud: The Lost Sketches was oddly entertaining. Introduced by lifelong Pete and Dud fan Jonathan Ross (and for once he seemed genuine), the set of sketches performed - 'lost' in the sense that the BBC unbelievably wiped the original TV tapes, so they only survive in audio or script form - at least served as a priceless reminder of one of the truly great comedy pairings.

It was like watching a rock tribute band who know all the words and get the notes in the right place. You could sing along but inevitably there was a spark missing. It was the brief clips of the real Pete And Dud that were worth sticking around for, the mix of surreal allusion, schoolboy smut and lady frocks making it clear how much the duo influenced everyone from The Fast Show to Little Britain.

There was a missed opportunity in the mix: Stephen Fry and David Mitchell, only featured as talking heads, would have made a perfect Pete and Dud.

Instead the originals were lovingly, though palely, imitated, new boy Jonny Sweet coming closest to catching the anarchic 1960s spirit that Pete and Dud encapsulated.

Now what we need is a series that rounds up every clip that still exists.

Jonathan Ross rounds off his BBC career this week with his final chat show on Friday, and this love-letter to comedy duo Peter Cook and Dudley Moore. Ross, a devotee of the pair's sardonic, surreal sketches, tells us that Pete and Dud were his first TV comedy love. Their series Not Only... but Also ran on BBC2 between 1965 and 1970. It will surprise no one to learn that the BBC subsequently wiped the tapes of many of its 23 episodes, some of which survive only in script form. Which is where we reach the chancy bit of Pete and Dud: the Lost Sketches. Ross's guests - including Alistair McGowan, Angus Deayton and Hugh Dennis - gather to re-create some of these vanished comedy gems. I hope it works.

It's one of the tragedies of 1960s TV that so many episodes coveted by posterity were wiped at the time, either because it was assumed they'd be of no further interest or simply to reuse the tapes. Peter Cook and Dudley Moore's Not Only... But Also fell foul of this folly. However, sketches have survived in script form and here Jonathan Ross assembles a contemporary cast including Angus Deayton, Ade Edmondson and Simon Day to recreate them, while Stephen Fry and David Mitchell among others consider Pete and Dud's legacy.

Right up until the late Seventies, it was common policy for the BBC to wipe reels containing previously broadcast programmes in order to make space in the archives and save money by reusing the tape. One of the most significant casualties was Dudley Moore and Peter Cook's seminal comedy sketch show Not Only... But Also, of which fewer than half of the 22 episodes survive - despite apparent efforts by Peter Cook to purchase the masters from the BBC before they were wiped. While some of Pete & Dud's famous routines have been recovered from other filmed performances, others now exist in script form only.

Hence this project, spearheaded by Jonathan Ross, to resurrect Moore and Cook's lost sketches by reperforming them with a group of contemporary comic actors, including Adrian Edmondson, Alistair McGowan (who is rather good as Sir Arthur Streeb-Greebling) and Outnumbered's Hugh Dennis. The scripts still sparkle despite the passing of time, but the performances, perhaps inevitably, make you miss the real Pete and Dud all the more. However, the film has undoubtedly been made with the best of intentions, and includes rare archive footage of the original duo in action too.