I just found out about this resource via Alec Couros' blog Open Thinking & Digital Pedagogy. The University of Nottingham has put together a series of YouTube videos, apparently one for each element on the periodic table, called The Periodic Table of Videos. I just checked out a few (Zinc, Potassium, & Uranium) and they're pretty engaging. I've embedded the trailer for this video series below.
Definitely worth a look if you teach any chemistry, otherwise forward it on to a colleague who does!