Paul Sinha surprised everyone with his nomination for Edinburgh's top comedy award last year. Now he shows he is no one-hit wonder, delivering a follow-up that trumps the original. This year's set still has fun with Sinha's improbable identity: he's the part-time GP who is also "manfully filling the gap in gay Asian comedy vacated by the premature death of Bernard Manning". But it is also a leap forward, as a more confident and commanding Sinha explores those moments when he, and we, have felt like "the king of the world".
The subject is never quite as compelling as last year's, when Sinha argued - contrary to the racism and homophobia he had encountered - that people are more tolerant than we think they are. But he is still seeking answers to questions other comics don't even ask. After one routine about a dust-up in a Glasgow kebab shop, he tellingly observes that Brits are "not terrified of getting too drunk, we're terrified of not getting drunk at all".
The show invites us to savour moments of euphoria and mortification as the times when our lives are lived to their fullest. But there are jokes alongside the uplift - and good ones too. Sinha paints vivid pictures of his everyman cowardice and moral equivocation, in scenes ranging from a TV quiz he starred in as a 20-year-old, to a Las Vegas holiday he took when the Iraq war was at its height.
He can also skilfully foster an atmosphere of consensual liberalism, suddenly to show how little right we have to smugness, as with this line about the films of Eddie Murphy: "Am I glad to come from a country that doesn't find fat men in women's clothes funny? Yeah." Pause. "But no, but yeah." I'm giving Sinha's return the thumbs up, with no buts whatsoever.
· Until August 27. Box office: 0131-556 6550.
