Hockney making faces, Henry Moore in his daughter's wig – some intriguing photos of Britain's art titans have just been discovered in an Essex barn

Imagine the art exhibition as a blockbuster action movie: perhaps something like The Expendables (2010), in which hefty stars like Sylvester Stallone and Bruce Willis are brought together (at last!) to spray bullets, pummel and high five: powerful presences brought together. Mark Leckey, in his first major public gallery show in London since winning the Turner Prize in 2008, has brought together some other powerful presences – brands – as though they were the stars of his show. Artists, galleries, electronics companies: all flattened into brands. Samsung! Henry Moore! Serpentine! Fiorucci! Hyde Park! Entering the Serpentine, one is confronted with a trailer for this exhibition – the one that is happening now – announcing the presence of these in his show.

Mark Leckey, a Turner prize-winning artist, has likened a Henry Moore sculpture to a Samsung refrigerator, calling them both highly marketable brands that trade off the legacy of their names.

Leeds College of Art

Was it a rage against the dying of the light that caused Henry Moore to produce so much in his last two decades?

A Royal Academy exhibition shows some of the great works of the last hundred years, but ignores the art that excites the public, says Adrian Hamilton

Moore and Hepworth aside, our Modernists persistently failed to hit the target

Metropolitan Museum of Art, New York

A crumbling barnyard, a room full of page three girls and a previously undisplayed work by Damien Hirst will be among the artworks included in the first retrospective of 20th century British sculpture to be held in this country for nearly three decades.

How much great 20th century British sculpture has there really been? Surprisingly little. When painting was transforming itself almost beyond recognition in the early decades of the 20th century, sculpture seemed woefully absent, as if it didn't really know what role to play, as if it lacked confidence in its own purpose.

The announcement that Anish Kapoor is to exhibit large sculptures at the Serpentine is no surprise. After all, since his retrospective closed at the Royal Academy he hasn't been shown in London for all of nine months.

Visual Arts: I went to Barry Flanagan's posthumous show at Waddington Galleries. I thought Barry was a very good artist although I prefer his work prior to the hares. I've also just been to the Henry Moore show at Tate Britain. I think Moore is a great artist but his work has never moved me in the same way as Giacometti or Brancusi. I saw the Turner and Richard Long show also at the Tate. The Turner was my favourite of the three. I thought the Long show was very interesting but not really my thing.