The educational DVD is now available from Bullfrog Films. Get your school library or department head to order it here.
You can download a teacher activity guide, written by Michael Alex and Krista Hunt, that includes exercises for students to initiate other Yes Men-inspired actions. (It's in progress, and will be updated often.)
You might direct your students to the Yes Men's new Identity Correction Challenge Game, at challenge.theyesmen.org. It includes a complete (or at least growing) how-to on the actual techniques the Yes Men have used.
Finally, here is a poster that briefly and entertainingly describing "Identity Correction." Click on the poster for high-res version, or click here for PDF.