French-Canadian Robert Lepage is a clever theatre inventor and tireless dramatist. This includes film, though with much less frequency than his stage pieces. The latter have refined themselves into films that are not going to get people running off the street but which are never less than thoughtful – and that is part of the problem. His stage imagination, so flexibly at work in The Dragons’ Trilogy and The Far Side of the Moon (which also became a film), wreaks endless visual and sonic surprises, and also allows itself to probe, three-dimensionally, philosophically.

Back at the Venice Biennale in 2010, the German film director Wim Wenders showed a 3D video installation titled “If Buildings Could Talk”.

Stellan Skarsgård is having a good Berlinale. The veteran Swedish actor proved the main calming influence in Lars von Trier’s Nymphomaniac Volume One (***), which the Berlin festival screened as a world premiere in the director’s version, running at 145 minutes. That’s about 25 minutes more than the UK will be seeing from 21 February, when both parts of the work will be released.

The opening days of the Berlinale have seen mixed reactions to high-profile English-language offerings. With its stylish sense of mittelEuropa, the festival’s premiere, Wes Anderson’s The Grand Budapest Hotel, apparently went down a treat. Much less kudos, though, went to George Clooney’s The Monuments Men (released in the UK this week, reviewed on theartsdesk today).

Big hitters have graced Berlin, with the festival now reaching its close - Damon, Huppert and Binoche have been and gone, Deneuve is yet to come - but one of the more anticipated visits this week was Steven Soderbergh’s. He has said that Side Effects will be his last feature as he “retires” at 50.

They’re in trouble. They had to be. Otherwise there’d be no drama. And if you’re a fan of Richard Linklater’s Before Sunrise (1995) and Before Sunset (2004) skip the next two paragraphs to avoid knowing where, physically, temporally, Céline (Julie Delpy) and Jesse (Ethan Hawke) have arrived since the poetic ending of the 2004 film.

Great fun on day three in Berlin: Scarlett Johansson co-stars in a porn movie. Well, a movie about a young man’s love of porn sites, in which she flashes her famous curves - and starts sleeping with Jon Martello (Joseph Gordon-Levitt). But Jon, a swanky, body-building Roman Catholic, is soon dumped; Johansson’s Barbara Sugarman sees no future in being jilted by a laptop and tissues.

Ecology at the first full day of the Berlin film festival. An intriguing Matt Damon city-versus-country movie, Promised Land, puts fracking into the mainstream for the first time. Damon plays Steve Butler, an eager corporate buyer of leases in rural America to enable his New York employers Global to start deep drilling for massively lucrative natural gas.

In a major festival upset last night, the Taviani brothers Paolo and Vittorio won the 2012 Berlinale’s best-film award, the Golden Bear. Their film, Cesare deve morire (Caesar Must Die), defies categories. Set in Rome’s Rebibbia maximum security jail, this extraordinary hour and a quarter charts the making by inmates of a production of Shakespeare’s Julius Caesar.

Another 400 films, another rush for seats, another biting wind from Vladivostock: the 61st Berlin Film Festival - the Berlinale - has packed ’em in in the centre of town at Potsdamer Platz (mainly) over the last 10 days and hoped to light up the inevitably gloomy middle of February, and almost succeeded. But boy were there some tedious competition films this year.