In my very humble opinion, Veer is one of the most creative stock providers on the web. Their searches are intuitive, their photos are modern and the customer service is spot-on. Aside from that, they do plenty of interactive bonus campaigns, and though they are promotional by nature, they're entertaining and unpushy.

The latest, Clockbusters 2: The Sequel, is pretty entertaining with a playful interface. Veer gives you three photos and you must name the movie, and though the photos from their collection, more often than not, were not intended to directly relate to a film, it's amazing how you can intuitively discern even more abstract pairings. Have a stab at it!