Jennifer Saunders

Charge your flutes with vodka champagne cocktail, Ab Fab fans! This could be the last-ever episode (although there are rumours of a movie). Certainly, it's the last of three specials, after two at Christmas and New Year, reuniting the bad girls of chichi Holland Park for their 20th anniversary.

Why the long wait? Well, this was always intended as an Olympics-themed edition, with the Games descending abruptly upon Patsy and Eddy's blinkered lives. Eddy could go for gold herself - if there were a category for partying and pratfalls. Sadly, Patsy looks set to be left at the starting line: she's developed, well, let's just say a little issue whenever she sneezes and is in need of a "tightening procedure".

Jennifer Saunders and Joanna Lumley are on top form with the physical comedy and waspish remarks. June Whitfield's Gran is as endearingly batty as ever and tonight gets the final funny line - if not the last laugh. Watch out for cameos by Dames Kelly Holmes and Tanni Grey-Thompson, as well as fashion designer Stella McCartney, for whom Eddy has developed something of a girl crush. It is not reciprocated.

This latest of the specials seems more pantomime-like than ever: socially conscious Saffy is now wandering about in full African dress; the script is full of Olympics references (as are Bubble's surreal, high-concept outfits); and ugly sisters Edina and Patsy (Jennifer Saunders and Joanna Lumley) once again set themselves up for a fall thanks to their desperate desire to party. Even at its cheesiest, though, Ab Fab is always raucous fun, while there are some game appearances from some Olympic heroes past and present.

Jennifer Saunders gave herself an Olympian challenge when she agreed to build an episode of her award-winning sitcom around London 2012.

She's managed it, though, with Absolutely Fabulous: Olympics (BBC1, 9.30pm).

Amid the Bolly, the bitching and the fags, her character Edina rents out her London home to a Hollywood A-lister for the Olympics.

However, no-one has told her that she is supposed to move out, along with her family and assistant Bubble (Jane Horrocks), To make matters worse, Edina's ex-husband and girlfriend turn up to stay for the Games.

There is some sports action - if you count Eddy and the fun-loving Patsy (Joanna Lumley) running
for glory in the Olympic stadium and managing to crash a celebrity reception attended by real-life Paralympics legend Baroness Tanni Grey-Thompson.

Absolutely Fabulous: A unholy mess

This unholy mess was all agonising enough anyway, but seriously suffers in comparison with another Olympic-themed BBC comedy, Twenty Twelve, which airs 24 hours later. That show is prescient, subtle and satirical. This one used a sledgehammer yet still kept missing its target.

Just when you thought no more Olympics-themed programming could be squeezed into the schedules, the "sweedie darling" sitcom returns to give its own raucous spin on events. Edina Monsoon (Jennifer Saunders) feels past her sell-by date (rather like this show, cynics might suggest). Party invitations are no longer plopping onto her designer doormat and she can't even get into her favourite fashion stores anymore. Age has also caught up with best friend Patsy Stone (Joanna Lumley), the former glamour puss is reduced to wearing incontinence pads and cripplingly tight control underwear. For the duration of the Games, Eddy has rented out her house to a Hollywood A-lister and London 2012 is passing the pair by, until daughter Saffy (Julia Sawalha) returns home and exhorts them to embrace the Olympic spirit. Cue celebrity cameos from Dame Kelly Holmes, Dame Tanni Grey-Thompson and Stella McCartney, plus a sequence filmed inside the Olympic Stadium. This is the last of three 20th anniversary specials, the first two of which were shown over Christmas. It delivers the odd laugh but feels distinctly dated and should probably be laid to rest - at least until next year's mooted movie spin-off.

Madonna's lifetime Ab Fab ban

Madonna will never be allowed to appear on Absolutely Fabulous even if she wanted to, according to the show's creator Jennifer Saunders.

Eight weeks into her term and with her lawyer unwittingly working against her and fiancé entirely intentionally seducing her sister, Helen still labours under the misapprehension that people on the outside care about her when it's really her fellow inmates who are willing to put themselves on the line for her. Although Top Dog's newly defected but long defective posse prove to be of limited use as she resolves to fight her own cause. Some crafty sight gags and game performances (especially Jennifer Saunders in the Matt Berry role of the psychologically suspect big cheese) aside, Dead Boss is still pulling its punches a little, lacking the iron-fist-in-velvet-glove smarts of Porridge while pulling back from the sort of genuine depravity that could really mark it out. Enjoyable enough, though.

The murder case rumbles on, and suspicion begins to spread through Entirely Tiles as Mrs Bridges' reign of non-Nespresso terror continues. Mary uses her unlikely "very sensitive bitch-dar" to probe the lottery situation, with Henry's help. Meanwhile, behind bars, Top Dog ditches her posse after a cigarette racket throws up a menthol ("a pudding fag"), causing the bereft gang to latch on to Helen. She's using her prison time to learn about the law, mostly from reading John Grisham novels, but with Jennifer Saunders's governess otherwise occupied, things don't look too hopeful.

Sharon Horgan returns to the always slightly dodgy world of the BBC Three sitcom with this new series about a woman wrongly sent to prison for murdering her boss.

In Dead Boss, innocent convict Helen Stephens is trying her best to overturn her conviction, which is not easy, as seemingly everyone around her is keen on her staying banged up. Her unhinged, arsonist cellmate Christine (Bryony Hannah) doesn't want her new friend to leave her; Governor Margaret (Jennifer Saunders) can't be bothered with the paperwork; the prison's reclusive "boss" Top Dog (Lizzie Roper) once was Stephens' bullied substitute teacher whose taunts leader her to murder her own husband; and former co-worker Henry (Edward Hogg) may seem keen on getting Stephens out, but he is a obsessive stalker who wants her to relay only on him.

The show began with a double-bill, which seemed like a good move, given that the second was clearly the stronger of the two. Both had their moments, but the first seemed to be concerned with setting up the situation more than the actual comedy - which is to be expected, really. The second episode, in which the prison runs a quiz where the top prize was five years off winner's sentence, had the better plot and, on the whole, was lots of fun.

I know some critics have been likened it, unfavourably, to Porridge, which was inevitable I suppose. However, both shows have major differences in terms of content, casting, and studio audiences (Porridge had one). It might even be better to think of Dead Boss as a comedy drama rather than a straight sitcom. Oh, and stop comparing the two.

Then again everyone else will probably be saying the same thing: "Why did they cancel Pulling?"

I realise BBC3 comedies are not aimed at the more considered grown-up, but nothing will stop me from saying: "Dead Boss? Dead loss, more like." This was a prison sitcom, with one normal person (Sharon Horgan as a woman wrongly convicted of murder) surrounded by pantomime fools. The stars of Porridge will be turning in their graves. Admittedly, Jennifer Saunders was good value as the governor and there was the odd decent line (a misunderstanding involving "cellmate" and "soulmate" made me laugh), but the overall effect was flatter than a long stretch in Norfolk. It had one of those ill-advised plinky "light" jazz scores (think Dirk Gently) designed to accentuate the absence of laughter. By the end of the second episode, I was rattling the bars myself.