Writers' strike begins to hit UK
http://www.guardian.co.uk/media/2007/nov/06/television2

A number of talk shows amongst other hit shows such as Heroes, Greys Anatomy and CSI could be affected by a strike by screenwriters, the last strike by screenwriters in 1988 lasted 22 weeks and cost the industry an estimated $500m
This latest dispute began after talks between the Writers Guild of America and the Alliance of Motion Picture and Television Producers, which represents the Hollywood studios, collapsed on Sunday night. Late-night talk shows were first to be hit because they rely on topical scripts
Writers want higher fees, or "residuals", from work that is released on DVD or used online

The purpose of the strike is because writers want higher fees..They help write for the some of the top US shows such as Ugly Betty and CSI. This can also be seen an example of corporate greed, as large media organisations such as NBC and Paramount are not willing to pay writers more money.