Listen Against, the new satirical series on Radio 4, got off to a pretty ropey start, the first three minutes feeling more like 30. But, just as finishing off my bathroom grouting was starting to feel like a more fun prospect than continuing listening, a few original comic ideas actually began to surface. Nowhere near enough though to make me contemplate tuning in again to what was largely pedestrian satirical fare targeting mostly predictable subjects. Not even if B&Q is shut and the grouting all finished.

Radio review: Listen Against

Melvyn Bragg zips back into the past to rewrite history: just another quiet news day on the spoof show.

Alice Arnold and Jon Holmes bring the glorious fantasy radio show where amazing things happen, like all The Today Programme presenters talking together and the hunt for Melvyn Bragg, who's gone missing, lost in an In Our Time machine he's built with tips gleaned on his many adventures in knowledge. Don't listen to this sitting on a rickety chair. It may collapse under the impact of your laughter. The "interview" between John Humphrys and PM Cameron on the state of their relationship and a discussion of Rastamouse in a new role are both sublime.

If the real world becomes too much, try Listen Against (Radio 4, Tuesdays at 6.30pm). It is so funny it will rearrange everything. Last week the pipe carrying BBC Three exploded, polluting all programmes around it; the BBC expanded into pizza delivery ("We can't leave it to the private sector..."); Gaby Roslin and Ed Stourton channelled to the centre of the Earth for Children in Need; the Dimblebys become News Brothers, a musical. Alice Arnold, Jon Holmes and company on Listen Against will brighten even the darkest evening.

Were the Monty Python team starting out today, they might conceivably come up with something like the utterly fabulous Listen Against, supposedly a news round-up with Alice Arnold in the studio and Jon Holmes reporting. It's a glorious mixture of cannibalised cut-ups from the BBC's current affairs output and segments featuring Beeb figures playing themselves (Ed Stourton and Gaby Roslin, for example, on a Children in Need expedition to the centre of the Earth).

Much of it is directed at the BBC itself, and the triumphant stand-out last week was a rolling report from the scene of what Arnold called a "broadcastastrophe". "The pipe that pumps bad TV into the nation's digiboxes" had burst, and "gallons of terrible programmes" were spilling out, contaminating all the decent stuff with BBC3 output. "Awful programmes are threatening wildlife," said Holmes. "I saw a man trying to clean James Corden off a guillemot."

The emergency services were throwing episodes of Dad's Army down the shaft to try to stem the flow. And how much was escaping, Arnold inquired? "It's estimated at up to 3,000 scraped barrels a day," said Holmes.

Radio review: Listen Against

The Radio 4 spoof comedy returns to take a well-aimed satirical swoop at radio and television.

Very funny (and rather rude) pretend radio show, real extracts from actual broadcasts mashed up into fantasy fictional contexts (Jeremy Paxman running amok and being chased by the police, for example). Jenni Murray, Richard Bacon and John Humphrys appear as themselves but others (David Mitchell, Evan Davies, Steve Wright) are edited into parodies of themselves. Excellent cast, tight production, sharp scripts and a glorious capacity to make telling fun of radio's daily excesses. The Robert Peston competition is a wow. Alice Arnold presents, perfectly.

What clever little sausages that Jon Holmes and his cutting crew are. Back for a third series of the show that cuts and re-edits radio and TV to great satirical effect, they turn their scatter guns on a range of targets, from David Mitchell and his takeover of all broadcasting to 24-hour rolling news coverage of a Jeremy Paxman on the rampage, randomly firing questions at passers-by. Joining in the joke and enjoying having the mickey taken out of them are John Humphrys, Jenni Murray and Richard Bacon. It's like Feedback, but with more blood and guts!

R4's Listen Against scripted flights of lunacy recalled the best of The Day Today. For the first time, a Satanist occupied the Today programme's Thought for the Day slot, recalling the time he sacrificed a goat and drank its blood ('That should give us all something to think about,' he concluded), while Compton Pauncefoot, controller of BBC Animal Entertainment, was questioned about offensive messages left on John Cleese's messaging service by the stars of Radio 2's The Monkey and the Parrot Show. He told presenter Alice Arnold: "As a result of this outrage, Radio 2 is to be bulldozed to the ground and in its place we're creating a spring meadow of quiet contemplation."

In these hi-tech modern times you now, of course, have the added opportunity of catching up with radio programmes you have missed or want to listen to again via the stations' websites. With so much on offer, Listen Against's Alice Arnold and Jon Holmes decided the copious amounts of material could do with a bit of drastic editing - in other words, they hoped to present all the right snippets but not necessarily in the right order.

Thanks to some clever editing, there were some funny news items from the previous week's radio, not least the contestant taking part in Ken Bruce's Radio 2 Popmaster quiz, who had an interminable list of people he wanted to say hello to and the light entertainment meltdown when a laptop containing the subjects for the next 10,000 episodes of Just A Minute was lost.