Project ROME for Education lets students and educators express, collaborate and communicate ideas using graphics, photos, text, video, audio and animation in a simple, unified content creation and publishing environment to enhance the learning experience.
This lively RSA Animate, adapted from Dan Pink's talk at the RSA, illustrates the hidden truths behind what really motivates us at home and in the workplace.
This seems interesting; not sure how I might use it right off the bat, though. Be sure to check out the intro story: http://sleepisdeath.net/slideShow/
Search over 12,000 movie clips by key word. Provides "share" links and embed codes. Could be an awesome resource for spicing up classroom presentations...