This just in, from my friend Adam Dershowitz:
Of course, once again, Chabad was there first (well, to be fair, Larry David and HBO probably deserve the credit, but Chabad is making good use of it):
Join Chabad for High Holidays! from JAB MEDIA on Vimeo.
This clever little video, adaptable for the Chabad house near you, is the brainchild of Jewish Abstract Media. Kudos. And G'mar Chatima Tova.