Mark Lawson talks to Peter Greenaway, whose new film Night Watching is inspired by Rembrandt's famous painting The Night Watch and stars Martin Freeman as the Dutch artist. As a campaign is launched to give Ultravox's Vienna the No.1 spot in the charts it failed to get in 1981, David Quantick rails against the current trend for pop campaigning. The writers Julian Barnes and David Edgar discuss the transformation by Edgar of Barnes's novel Arthur and George into a stage play.