Via Pete Lacey I found a cute presentation on REST resources (some are "behind a registration wall", but at least free).
Really great: The audio-enhanced REST Take 5:
A Take 5 is an audio enhanced five minute PowerPoint show on a pertinent topic. The REST Take 5 is really 15 minutes, but gives a good 40,000 foot, managerial overview of REST.
(the registration at Burtongroup DID suck, but their support fixed it within the hour... why don't they support OpenID or the like??)