Jeff Koons' spectacular October 2008 exhibition at Berlin's Neue Nationalgalerie presented the infamous series of sculptures and paintings known collectively as Celebration, a project whose fabrication has involved so much labor (both manual and computer-aided) that Koons seemed to almost vanish from the art world radar in the 1990s, when he first undertook the series.  Such works wear their playroom origins on their sleeves, but their gargantuan proportions, with their attendant sense of menace, establish them firmly in the adult world as infant objects retrieved and rebuilt with adult strength. This monograph documents these mammoth installations in the Neue Nationalgalerie's Upper Hall, an exhibition that without doubt constitutes a milestone in the artist's career.