Adam Dorrell is quite creative. He took the emoticons we developed at Bain for our clients and members of the NPS Loyalty Forum, and created a very simple web-based tool for generating simple JPG files for use in presentations.
To create a custom graphical representation of the "wall of faces" using our emoticons, all you need to do is enter your raw data (number of Promoters, Passives and Detractors). The tool generates a picture that you can save to your desktop or copy and paste right into your presentation. We ask only that you respect our trademarks and service marks for NPS, Net Promoter, Net Promoter Score, and the emoticons.
You can find the Recommendi emoticon tool here: NPS emoticon tool.
Bain is also developing a simple PowerPoint add-in that will create native PowerPoint graphics using the emoticons. It should be available in a few weeks for registered site visitors.
FYI, Adam also offers a freemium-model-based NPS support system called Recommendi. I have no direct experience with it, but it looks interesting, especially for smaller companies.