Vincent LaForet's "The Cabbie" - Shot on 7D
There's an old joke that shooting with available light meant using every light available on the truck. Fortunately, with Canon's new generation of HD capable DSLR's, the term "available light" means what it ought to. Vince LaForet's work with HDDSLR cameras is a great example of using both ambient and specular light present at locations in order to not only expose an image but effectively telling a very visually compelling story.
Check out "The Cabbie", the first in the installment of Canon/Vimeo's "The Story Behind the Still" campaign in which a single image is then interpreted to motion: