Obviously, The Office was brilliant. Still is. Even now, I'll stumble across a repeat - the night out at the disco! Bacardi Breezers £1, Wonderbras get in free! Gareth leaving in a sidecar for a threesome! - and before I know it I'll have watched the lot, again.

Fawlty Towers is the only other show which has that effect.

Some people preferred Extras, reckoning it to be sweeter because of the Andy-Maggie relationship, but for a long time I thought Ricky Gervais was just showing off with cruel put-downs and star walk-ons in a lazily showbizzy setting. The last episode, though, was brilliant on the nature of fame - sweet ending, too. Nevertheless, I seemed to have cooled on the idea of the main man as Ricky Genius (notwithstanding Stephen Merchant's contribution). So, as he got louder and ruder, did a few others. Thus, in advance of Life's Too Short, Gervais was issuing the challenge: "Bring on the haters."

Because Extras won me over, sort of, I'm loath to criticise this after one half-hour. But it has to be said that, uninspiringly, we're back in the biz (Warwick Davis, the lead, plays himself as an actor running a theatrical agency). That Gervais also plays himself, smirkingly, in a plush office, where he does that Brentian double-take for the docusoap camera underneath a giant Extras poster. That Davis is really playing another version of Gervais. Oh, and did I mention he's a dwarf?

Some, though not all, of the jokes were to do with height or lack thereof. Did I laugh when Davis fell out of his high-sided 4x4? Yes I did. He's a role model for dwarves, he says, who's trying to improve their, er, standing in the world and in this he feels a bit like Martin Luther King. "You say a dwarf wasn't taken from his homeland, chained and whipped and forced to change his name - no, maybe not, but then I've never seen a black man fired from a cannon."

Liam Neeson, also playing himself, hustled Gervais and Merchant, also playing himself, for stand-up work and was perceived to be even more berkish. Suddenly Davis' size was no longer the issue, he'd completely blended in, and maybe this is Life's Too Short's honourable intention. But it still feels like a safe, easy show. A safe show about the vertically challenged (with supplementary Aids and cancer gags)? How very Ricky Gervais, you might say, but on this evidence it isn't going to be the funniest series about a self-referencing comedy double act which sends up Liam Neeson. That award has already been claimed by The Trip. I'll love The Office for ever, though, so I'll never be a hater. I'm just, like Gareth after his health & safety demo failed to wow the Wernham Hogg sexpot, disappointed.

Channel hopper - Life's Too Short

Ricky Gervais and Stephen Merchant team up with short actor Warwick Davis for new comedy mock-doc.

I'm not quite sure what to make of Life's Too Short, Ricky Gervais and Stephen Merchant's much hyped new comedy starring Warwick Davies as a deluded, out of work actor.

An amalgam of The Office and Extras, presented in the once pioneering mock documentary format, it comes complete with all the comedy tics, touches and glances to camera associated with Gervais/Merchant productions. There are even moments when the excellent Davies, as the self-styled "UK's go-to dwarf", behaves and sounds exactly like Gervais' most celebrated creation David Brent.

Life's Too Short has a familiarity that breeds, if not quite contempt, a genuine sense of disappointment at the lack of ambition. Even Gervais' trademark assaults on political correctness - a blacked up woman dwarf impersonating Stevie Wonder, for example - come over as contrived.

But when it is funny, Life's Too Short is funnier than anything else currently on television and Gervais appreciates the crowd pleasing value of a good star turn. I suspect people will be discussing Liam Neeson's inspired cameo, playing himself as an aspirational stand-up comedian, long after the show's weaker moments are forgotten.

Life's Too Short review

Warwick Davis is doing little more than channelling Brent/Gervais - "She's not going to win any rear of the year competitions," he says of the pretty, regular-sized wife who has recently thrown him out - though he is perfectly good at this, every bit as boorish, in fact, as the prototype.

Liam Neeson was playing gloriously against type in the opener of Life's Too Short. He was pitching, to Ricky Gervais and Stephen Merchant (who play the successful comedy partnership Ricky Gervais and Stephen Merchant) a change of career; Liam wanted to branch into comedy. It took guts and no small talent from Neeson to come across as the world's most dour, egotistic, pedantic and, crucially, utterly humourless actor; his deadpanning of this alter ego made for five deeply funny minutes of comedy. I bet they fell about between takes.

I still like Gervais but perhaps wisely, given that a couple of odd little, ahem, misinterpretations by lesser minds, and the preponderance of that infuriating giggle - oh God, I've just thought of its screech as he falls about between takes - had begun to manage the impossible and take the sheen off Ricky Gervais for even diehard fans, he's put himself well in the background. Instead, the star is, of course, Warwick Davis, Britain's self-styled "go-to dwarf".

Warwick is immense. That's not a cheap sizeist joke, though I'm sure he wouldn't mind; he makes enough of them himself, mainly just by default, by being there physically, letting the camera show the absurdities. Not only is he a good actor, he's a terrific comic. He plays a far less likable version of himself, lacking in self-knowledge and overburdened with ego. In fact, he plays himself as David Brent. With the added size advantage, the contradictions become even more excruciating, as in his disdain for his tall, pretty wife. When he basically falls out of his Range Rover while voicing something about Martin Luther King, we're back, thanks this time to a brave and talented dwarf, to golden Gervais territory, with just-so timing and direction. This could be, you'll excuse me, huge.

You could get some idea of how nervous the BBC was about Life's Too Short (Thursday, BBC Two) by the documentary it put out beforehand which made it perfectly clear that its star, Warwick Davis, had not been cruelly press-ganged into appearing in a comedy about a dwarf. No, he'd actually done it of his own free will.

While Davis himself was very good, somewhere along the line co-writers Stephen Merchant and Ricky Gervais seem to have forgotten to give him much of a character. Instead, he was another bumptious, insecure actor, forever puffing himself up - albeit one who's only 3ft 6in tall. Easily the best scene came, not with Davis, but with the appearance of Liam Neeson playing a wonderfully humourless version of himself.

What made this so good was that it tapped into the dolefulness to which Neeson, one suspects, is prone. Yet while he and Davis suffered from the lack of self-awareness that's the hallmark of Merchant and Gervais's comedy, Davis's brimming optimism in the face of divorce and bankruptcy just seemed a bit sad by comparison.

Rosamund Hanson: Ricky Gervais had me in stitches

Rosamund Hanson, star of Ricky Gervais and Stephen Merchant's new comedy Life's Too Short reveals why the duo are the perfect comedy dream team.

Life's Too Short, Thursday 9.30pm, BBC Two

In summary, then, for anyone familiar with the Gervais-Merchant tone, the show will have felt remarkably familiar.

'Life's Too Short' premiere amuses nearly 2.5m

Ricky Gervais and Stephen Merchant's new comedy Life's Too Short premiered solidly on Thursday evening, while Rev returned with nearly 2.3m, the latest audience data has shown.

Life's Too Short - Too short on plot

Though there are some chuckles to be had in small moments, usually revolving around taste-based double takes or some light physical comedy, it feels like the plot's been somewhat left out in the rain.