Could you imagine watching a 24-hour long film without a main plot and with clocks as its main protagonists? Although this principle might sound like it could be a tedious ordeal, Christian Marclay’s impressive video collage ‘The Clock’┬áconsisting of about 12,000 film and television clips actually makes for an unforgettable experience. This special video work opened at Tate Modern on Friday 14 September and I went to see it yesterday morning, spending four hours in Christian Marclay’s carefully curated cinematic world.