I saw this really nice example of showing a wireframes in situ on the Pulse Laser blog. The blog says of this image:

One technique that S&W has been using recently to illustrate design work is placing sketches or wireframes in situ. Whilst wireframes themselves are incomplete artefacts, designed to be work in progress, they still suffer for being uniformly incomplete. Wireframes themselves can be almost too beautiful, and this means that it becomes all-too-easy to criticise them as only wireframes, rather than as part of a product that exists in the world. Contextualising the sketches into the photograph places the design into the world. This enables the design to be understood within the world, and also (importantly) to highlight the seams between the unfinished design and the finished world around it.

I really like this technique, which (as they say) puts the concept in context.