Cabaret, satire and good fortune merged to create The Two Ronnies, as Roy Smiles points out in his excellent play Goodnight From Him. It charts the 20-year professional relationship of opposites Corbett and Barker through inventive reworkings of their most famous skits.

So, for instance, in a reprisal of the class sketch, Barker looks up to Cleese because although he has more money he cannot speak Latin or spell 'xenophobia'.

Aidan McArdle plays Corbett with the familiar, emphatic phrasing, while Robert Daws' Barker is reticent and unstarry, like the original.

After works about Spike Milligan, Tony Hancock and Dad's Army, writer Roy Smiles once again plunders Britain's comedy heritage for this play about Ronnie Corbett (Aidan McArdle) and Ronnie Barker (Robert Daws).

Smiles uses the device of one of Corbett's monologues and parodies of their sketches to explore the differences in the two men and how they first met. The re-creation of the sketches has a novelty value for those who remember them, but often only serve to remind us how good the original Ronnies were. And having to explain gags that worked on screen ("you've thrown your drink over me") is plain uncomfortable.

An interesting curiosity, but the uneven structure and wayward impersonations ultimately make it rather disappointing.

Here's a play about the friendship that grew between the two lead actors in Dad's Army, John Le Mesurier (played by Anton Lesser) and Arthur Lowe (Robert Daws), which began on the TV series and lasted all their lives. Playwright Roy Smiles switches between the letters the pair exchanged in the 1980s, remembering how they got to know each other making the show, and afterwards, showing why such different people remained such pals. Maybe part of it was the integrity of the David Croft and Jimmy Perry scripts which, 40 years on, still shine.

Radio 4 commissions drama about Dad's Army

Dear Arthur, Love John, by West End playwright Roy Smiles, will chart the relationship between Dad's Army stars Arthur Lowe and John Le Mesurier and focus on the creation of the beloved TV series.

Comic radicalism was the theme of Roy Smiles' Pythonesque, which swung between melancholy and hyperactivity in its homage to Monty Python. His focus was Graham Chapman (Chris Polick), whose Lady Gaga-style willingness to experiment with costume ("Does my dress go with the pipe?" he once asked) was a cover for his struggle with shyness, alcoholism and the pressures of co-writing the cult seventies TV comedy. His writing partner John Cleese (Mark Oosterveen sounding very like the beanpole performer) emitted tenderness and exasperation. The mix of scenes of realism with those in the satire-meets-panto style of the Pythons worked very well.

You're on a hiding to nothing dramatising the Monty Python story: try as you might, you're never going to be as funny as your subject. Undeterred, Roy Smiles undertook the challenge in Pythonesque, which centred on Graham Chapman's battle with booze and his early death from cancer, told in the style of those overarching comedy gods.

Written for last year's Edinburgh Festival, it probably worked better on stage, and the tone of over-egged jocularity grated somewhat. Devices such as having Eric Idle, in full "Wink-wink nudge-nudge" mode, audition Chapman and John Cleese for the Footlights were simply irritating.

For all the pastiches, even the ones that worked, it was Chapman's sombre closing speech that was truly memorable: "I was proud to be gay, proud to conquer my alcoholism, proud to be a Python, proud to write with John Cleese, and proud to play the lead in two of the funniest movies of all time. I enjoyed a full life and I was loved by many. What more can a man ask?"

This is a clumsy and tedious play. Its writer, Roy Smiles, has made cardboard characters even though they are drawn from life and, with the exception of the central figure, Graham Chapman, still living. To understand it at all you have to be someone who can recite whole sketches from Monty Python's Flying Circus (the dead parrot, the funny walks, e.g.). My mind boggled when I listened to the preview disc but I draw it to your attention as a piece which (a) shows how hard it is to write well for radio and (b) demonstrates the abiding power of great television.

You have to be a Monty Python fan, you just have to. What this play suggests is that the group stopped even thinking of working together once Graham Chapman died. It's replete with Pythonesque descriptions; there's no effort to introduce characters subtly, they're straight in giving you their life story or possibly an entire series of illuminating lies in silly voices. And it's chock-full of famous sketches, buckled a little to tell a less famous tale. Pythonesque, written for radio by the appropriately named Roy Smiles, is really the story of Chapman and his drinking, his drug use, and his impact within this special group. The moments of pathos in it are like bullets through the comedy, which is otherwise such a barrage of schoolboy daftness that you have to be a fan to enjoy it.