Scratch project file created based on the Scratch demo shown in the PiFace documentation:
"Controlling Pi Face with Scratch"
See below under Attachments the file piface1.sb.zip . Download the file and unzip it. Scratch should be able to open piface1.sb. Note: you will first need to follow the instructions in the "Controlling Pi Face with Scratch" link above to get Scratch setup correctly. (This involves starting a Mesh session and then running the PiFace handler script to connect to the Mesh session. This allows Scratch to interact with the PiFace.)
For Amazing BrainTeaser contest entries - please post the answer here to enter giveaway: http://www.element14.com/community/docs/DOC-54752