We do a lot of work on what we call the 'Contextual Curriculum' at our place. The idea is that, for example, the English work on Striped Pyjamas, the History work on the Holocaust and the Citizenship work on human rights is in some form joined up (not necessarily taught simultaneously, but the links between the subjects are made explicit). To that end we also use some Geography work in Y7 as the basis for presentation skills, we do some photo manipulation that is then used in Art, in Y8 we do more graphics work in the style of Warhol and Hockney and a website about the work done in DT and then in Y9 we look at 3 point perspective in Sketchup as well as designing a 3D birdhouse (Art and DT). There's nothing at all wrong, and much that is right, with teaching skills in context (as opposed to a fictional, arbitrary project) as long as it's a two-way process. In our case we make sure both subjects benefit, and we don't become dogsbodies for other departments.