For the 2013 holidays, DDB sent out a link to agency folks and clients, asking everyone to rate their behavior the past year on a naughty/nice scale. Based on where they placed themselves on the sliding scale, they were served one of four tyopgraphical poster designs.
Users could then order a printed poster of the design, and/or download it in a variety of formats, such as for desktop/mobile backgrounds.
The holiday site was very well-received, and was mentioned on Advertising's Little Black Book, as well as on Media Post.