From Laurel and Hardy's collapsing pianos to Reeves and Mortimer's oscillating frying pans, this diverting documentary traces the enduring appeal of physical comedy. While its origins are ascribed to a combination of anti-authoritarianism, sadism and reckless juvenility, clips illustrate the meticulous timing vital to the custard pie and the banana skin. Barry Cryer, Ben Miller and Graeme Garden are among the expert insight-dispensers; but what it all boils down to is Frank Spencer hurtling through a shopping precinct on roller-skates ("BETTY!"). Champion.

By chance, John Humphrys asking "Would you like a turn?" featured as one of the Questions That Are Never Asked on the new series of I'm Sorry I Haven't a Clue. The choice of Jack Dee to take over from the lamented Humphrey Lyttleton was an inspired one, even if his first joke about Jacqui Smith's husband destroying her career "single-handed" did sound a lot like The News Quiz. Fortunately, with the help of panellists like Barry Cryer and Graeme Garden, the programme's unique flavour remains. Like Wogan's world, the "antidote to panel games" depends a lot on the surreal, the in-joke, and the trick of being risqué without being offensive. New games like Pensioners Film Club ("Death in Fenwicks" "The Postman Always Has to Knock Twice") mixed with old favourites like One Song to the Tune of Another. The sound of Rob Brydon singing the words of Jim'll Fix it to tune of "Mad World" made me choke with laughter. The problem with in-jokes though, is that people get them too quickly. At one point Jack Dee had to issue the howling audience with a plaintive reprimand. "I have got punch lines... please wait."

Modern comedy is 'cruel and cynical', says Barry Cryer

Barry Cryer, stalwart of BBC Radio 4's I'm Sorry I Haven't a Clue, has attacked modern comedians for being "cynical" and "cruel".

"This man seems to have spent his entire career dressed in women's clothing," declares Eddie Izzard at the start of this enlightening biography of Stanley Baxter. That's rich coming from a man not averse to a full-on flirtation with frockery himself, but it is said with nothing but admiration. In fact the warmth with which Stanley Baxter is described by the likes of Maureen Lipman, Barry Cryer, Billy Connolly and Julia McKenzie would keep the 82-year-old comic actor comfortable for years if it was converted into central heating. What they all recognise is that beneath the multiplicity of funny faces, extraordinary voices and relentless costume changes, Baxter has never shied away from humour that requires a bit of intelligence and cultural awareness from his audience.

Any radio show that's just started its 51st series has to be considered a national treasure. Described as an antidote to panel games, Radio 4's I'm Sorry I Haven't A Clue may be mainly cosy, middle class comedy fare, but it's impossible not to warm to the panel's total enthusiasm - including Barry Cryer and Victoria Wood - and eagerness with which the live audience boos and claps at every opportunity. Now using rotating chairmen, after the death of Humphrey Lyttelton last year, Stephen Fry sets the bar high here for those following, clearly relishing the banter he has with his quick-witted colleagues. Criticising such an institution may be tantamount to heresy, but adding 15 minutes to the 30 wouldn't do any harm.

After two weeks of trailers few can be unaware of the return of the "antidote to panel games" with Stephen Fry in the chair. Recorded at Her Majesty's Theatre weeks ago, the audience roars approval for Fry's saucy delivery of Iain Pattinson's salty script. Sven replaces Samantha as the invisible scorer, offering more chances to spot the innuendo. Graeme Garden, Barry Cryer, Tim Brooke-Taylor and guest panellist Victoria Wood make merry with the customary multitude of entendres, double and single Colin Sell, as ever, is at the piano.

After the sad passing of our beloved Humph, ISIHAC could have quietly shuffled off into the sunset, but it returns with guest host (and former panel member) Stephen Fry. Regulars Graeme Garden, Barry Cryer and Tim Brooke-Taylor are joined by new girl Victoria Wood, who turned down the chance to appear on the show 19 years ago, but hopefully will make many more appearances in future.

Barry Cryer: Those old ones are still the best

The treacle-voiced stalwart of radio's I'm Sorry I Haven't a Clue, is still going strong after more than 30 years of side-splitting gags and anecdotes.

The programme in which Marcus Brigstocke cajoles some famous faces to do something they've never done before or actively avoided - he forced Barry Cryer to watch an episode of Friends and Joan Bakewell to have a beatboxing lesson - leaps off the radio and on to the small screen. Tongiht's first episode sees Clive Anderson broaden his cultural horizons.

The early-evening Radio 4 comedy in which Marcus Brigstocke encourages celebrities to venture outside their comfort zones transfers to TV, with Clive Anderson the first to try five fresh cultural experiences. The former barrister had not been recorded throwing caution to the wind at the time of going to press, but we're promised few changes to the programme's original format. Recently we've heard Phill Jupitus eating his first Findus crispy pancake, Joan Bakewell getting a beat-boxing lesson and Barry Cryer changing a baby's nappy - the result being an enjoyably less-splenetic version of Room 101, in which the guests do sometimes find pleasure in the very things they've been avoiding.