Mark Frauenfelder:

This is a great idea. These folks bought fast food items and photographed them, then placed the photos side-by-side with the photos in ads for the same product. Shown here: KFC Famous Bowl
Each item was purchased, taken home, and photographed immediately. Nothing was tampered with, run over by a car, or anything of the sort. It is an accurate representation in every case. Shiny, neon-orange, liquefied pump-cheese, and all.Link (Thanks, Stephen!)