If you saw Karl Pilkington's recent Sky series An Idiot Abroad, you'll have seen him phoning Britain's leading dwarf actor Warwick Davis to check whether a Dwarf Village he'd visited in China was politically correct. Davis assured him, quite angrily, that it wasn't.

So you might be surprised to find Davis starring here in another dwarf-based jape, also made by and featuring Stephen Merchant and Ricky Gervais.

In this mockumentary, Davis plays a version of himself as he attempts to raise his profile as "a sophisticated dwarf about town". It's screamingly funny, and if Davis chooses to send himself up, who are we to judge?

Nobody complained when he played an Ewok, which is ­basically a sci-fi teddy bear.

Shaun Williamson is in it too - continuing his gag from Extras, but the funniest bit is a cameo from Liam Neeson who reveals he's branching out into comedy.

Miss this at your peril.

Life's Too Short review: Small steps

After spending the last few years bullying Karl Pilkington, making the odd movie and getting themselves blacklisted from American award ceremonies, Ricky Gervais and Stephen Merchant return to British TV with their latest feverishly-anticipated mockumentary this evening.

It's become clear that Ricky Gervais and Stephen Merchant are never going to make anything like The Office ever again. And, as they've said themselves, why should they: having created sitcom genius and revolutionised the genre, they are hardly likely to top it.

It's become clear that Ricky Gervais and Stephen Merchant are never going to make anything like The Office ever again. And, as they've said themselves, why should they: having created sitcom genius and revolutionised the genre, they are hardly likely to top it. What they did for an encore was Extras, which mocked their entry into the showbiz elite, yet celebrated it by bringing in all their new pals to amusingly send up their public images. They foisted the tedious witterings of their non-famous pal Karl Pilkington upon us, until he was in showbiz too. And Ricky made some disappointing movies and popped up in all his American showbiz mates' TV shows and on his pal Jonathan Ross' chat show and annoyed everyone by being offensive on Twitter (but maybe it was just him pretending to be offensive, except that still involved offending people, but they weren't his friends so they didn't really count). And meanwhile Stephen, er, did some "ironic" bank adverts.

OK, they did make the film Cemetery Junction, which wasn't about fame at all, but not many people saw that. Instead, Gervais in particular has seemed to relish spending his time in the public eye portraying a smug, annoying celebrity character to the point where the last line of Animal Farm seems to apply - looking "from pig to man and from man to pig ... but already it was impossible to say which was which".

So it is, ahem, small wonder that the pair's latest venture returns to that well, starring their showbiz chum and Extras guest star Warwick Davis, in a faux-documentary sitcom about a dwarf actor who runs an agency for other short actors (as Davis actually does) but who can't get any work for himself, even when he begs Ricky Gervais and Stephen Merchant to write him something. Confused? Yes, that's the point: life's too short revels in the boundaries between the real and the not-real, with most of the characters using their actual names, while playing themselves as venial twits.

The similarities to Extras can barely be overstated. While Davis has the starring role - and it was apparently his idea - the dialogue makes him actually sound like Ricky Gervais: you can hear those Brentian speech rhythms leaking out. It's oddly reminiscent of the recent films of Woody Allen, where he drafts in various young actors to play the "Woody" character and they all end up imitating those familiar nervous tics. Here, it's difficult not to hear Gervais's voice behind Davis's lines, such as: "I'm a bit like Martin Luther King, because I too have a dream that one day dwarves will be treated equally ... you say, oh no, it's not the same ... but I've never seen a black man fired from a cannon. Every day for a whole season and twice on Saturdays."

It's not the fault of Warwick Davis, who's absolutely fine in the role of a hapless fictional version of himself and clearly well up for any resulting confusion it may cause. But there's just so much of Gervais and Merchant, both in the references and on screen, that he's in danger of being squeezed out of what's meant to be his own show.

The show shares Extras' fascination with celebrity cameos and when Liam Neeson pops up to consult Gervais and Merchant, playing "themselves", on his stand-up comedy plans, Davis is relegated to the background while they milk the scene, surrounded by posters reminding us of all their previous work. Like Extras' Andy Millman, Davis' character has a useless hanger-on: instead of an agent, it's his accountant (Steve Brody, who was David Brent's useless agent in The Office Christmas Special). Even Barry Off Of EastEnders turns up, still playing the same loser.

Well, plenty of people loved Extras, of course, but given that it was a self-referential take on Gervais's own rise to fame, isn't making a meta-parody of it just a post-modern gag too far? But worse than that, the joke isn't all that funny anymore. There are a couple of laughs here, for sure (mostly from Neeson's bit), but the whole thing just seems like an indulgent, back-slapping waste of talent.

Karl Pilkington on An Idiot Abroad 2: interview

Karl Pilkington tells Catherine Gee about the highs and lows of filming An Idiot Abroad 2 and being Ricky Gervais's best mate... he supposes.

Karl Pilkington to appear in The Simpsons

Ricky Gervais's TV sidekick Karl Pilkington is to appear on The Simpsons.

This episode is so funny that even Stephen Merchant's animated alter ego has to leave his seat for a moment to compose himself. The stupidity
once again hinges on Karl Pilkington's hypochondria and the pearls of wisdom he learned from a 'professional leg rubber'.

We thought the joke of this animated podcast series would eventually wear thin but not so: there's no end to the bizarre logic and mutterings of whipping boy Karl Pilkington when prodded by Ricky Gervais and Stephen Merchant. This time, Ricky reads out some predictions for the future, prompting Pilkington to share his theories.

The wonderful thing about Karl Pilkington's idiotic philosophy is that, occasionally, there's a glimmer of logic to it all. For instance, what's the point in going to Covent Garden and taking a picture of all the mime artists, when the static medium of a photograph technically renders them no different to everyone else? He also delves into the realm of psychology of self, as he ponders who he'd actually be if he had his head transplanted on to someone else's body. Something to think about. Sort of.

The animated versions of Ricky Gervais's podcasts, featuring Stephen Merchant and Karl Pilkington, return for a second run. The voice-over describes them as a "series of pointless conversations", which is about right. Still, they're funny men, it's not without charm, and the animations are amusing.