This talk was given by Mark Birbeck at 'Kings of Code', in Amsterdam on May 27th, 2008. The W3C has a number of exciting new languages in development, from XForms for user interface definition, to RDFa and @role for defining semantics. These languages are usually regarded as something to be implemented natively by browsers, but this presentation shows examples of how they can also provide a rich source of 'hooks' onto which to attach 'unobtrusive javascript'.