Here is what is coming up on tonight's Newsnight and Newsnight Review:
By Emily Maitlis:
"This is it!" declared David Cameron, at the start and finish of a speech at the Carlton Club this week.
"This is it!" declared Michael Jackson launching his 02 tour, just before he dropped dead of a drugs overdose.
We all know the power of a pithy sentence which sets out your stall.
Where would Barack Obama be without "Yes we can"? Where would Bill Clinton have been without "It's the economy stupid"? Where would Gordon Brown have been without "Not flash, just Gordon".
Erm... Well, anyway.
Tonight our culture correspondent will pull apart the power and the pitfalls of the political slogan. But not until we've made you work first, by telling us your ideas for a Tory slogan on our blog.
Plus, now we are (G)20.
In Pittsburgh, Pennsylvania, world leaders are crunching serious numbers. Tonight, we're more concerned with one very simple one. The leap from G8 to G20.
What does it mean? Well, in essence, it's a recognition that the old clique of a few rich Western countries no longer rule the world and that real power now lies with Argentina, Brazil, China, India, Saudi Arabia and others.
An acknowledgement, you will say, that comes at least a year too late.
But how does this New World Order - disparate countries with very separate agendas - solve a problem like Iran.
It's the most pressing one on the table right now with the revelations of another nuclear facility in the country - something Tehran has denied for years.
We'll be asking the Foreign Secretary if the threats of sanction will ever become anything more substantial.
And we'll ask a global panel - including the flamboyant businessman David Tang - if the G20 can really solve the world's problems.
And here is Tim Marlow with what is coming up on Newsnight Review:
Tonight we put art, theatre and television drama on the couch and into analysis.
Last February, the National Gallery staged an exhibition exploring Picasso's relationship to the art of the past, but without actually hanging old master paintings in the same rooms.
Now Tate Britain is giving Turner the old master treatment, but this time the pictures go head to head and landscape to landscape.
Taking up the gauntlet thrown down by Rembrandt or Titian is difficult enough but having your work directly compared is ambitious and risky to say the least.
So how does Turner measure up and what does he seem to learn? Does the show diminish his radical status as a fore-runner of modern art or consign him to that of a mere academic artist unable to transcend the past? The answers, of course, will be complicated but worth tuning in for.
Over at the Royal Academy, sculptor Anish Kapoor is firing 20lb of red paint and wax at a gallery wall from a large gun, well - canon to be precise - every 20 minutes throughout his exhibition there which has just opened.
In the past Kapoor's work has been seen as contemplative, reflective, sublime and richly evocative.
Now, as he tells us in an interview, it has become more playful, more confrontational and more violent.
The US television series In Treatment has won Emmys and a Golden Globe and has already been screened extensively in Eastern Europe, Portugal, France and Sweden.
Britain's initial reluctance to buy into a series of programmes featuring Gabriel Byrne as Paul Weston, a psychotherapist who conducts real time sessions with five regular patients, is something we'll be analysing now that Sky Arts have taken the plunge.
Will it sustain nine solid weeks of screening and who is really being given therapy - Paul, his patients or the viewer?
Finally, former director of the National Theatre Richard Eyre has criticised the ´óÏó´«Ã½ this week for its failure to screen classic drama.
We'll be taking a look at the stage- screen divide and exploring the future possibilities for theatre on the box.
So join me and my guests Paul Morley, Lisa Appignanesi and Hari Kunzru on the couch on the box at 11pm.
Tim.