There is a little article in my 3DWorld 112 showing some architectural visualisation by Placebo Effects - a Norwegian vis house that has some fun stuff to look at. Their site has a simple but elegant slide show of their work with a few pieces of video thrown in - but fails to give all the juicy details of the projects that we would love to see.
Anyhow, you can get a feel for things with a few images like these:
[some of the architectural visualisation project images from the Placebo Effects site]
There is nothing remarkable about the work - so I guess this is a reflection of the good standard, rather than anything way above the curve. That said, I would love to create some work like this - just need to squeeze in the time...