Declared unfit for military service, Dylan Thomas spent much of the war writing film and radio scripts for the Ministry of Information. One of these, The Art of Conversation, is published here for the first time. Andrew Lycett explains its significance. Tom and Viv, Ted and Sylvia, and now Dylan and Caitlin: there is something about poets and their spouses that fascinates film-makers. Dylan Thomas, the self-styled "Rimbaud of Cwmdonkin Drive", is the latest to get the celluloid treatment. The rackety four-way relationship between the Welsh poet, his wife, an old girlfriend (Vera) and her husband (Captain William Killick), played out in the heightened emotional atmosphere of the second world war, is examined in primary colours in John Maybury's fine new film The Edge of Love, which went on general release this week. If that were not enough, we are promised Caitlin, in development by Pierce Brosnan, with Miranda Richardson in the title role. Another biopic, The Map of Love, has long been mooted by Mick Jagger's company, Jagged Films, but is not yet in production.