I know there are plenty of free stock photography sites out there, so it's interesting to see Adobe throw its hat into the ring with a paid service (you can get 10 free photos).
But what's probably more impressive is how they've showcased their stock photography service by showing you how a handful of digital artists have recreated classic pieces of art using nothing but stock photos and Photoshop. Very nicely done.
The Design of Influence: How to Craft Products that Move People