Check out this sample flipped lesson that I created in just a few minutes on the TED-Ed (or is it EdTED) site. Currently TED-Ed has only a limited number of videos, but perhaps all TED lectures will be available for flipped lessons in the future.
Interested in seeing what you can do yourself? Then go to http://ed.ted.com/ and click on the tour (or Learn More) links. Next, create your own account and get started.
This speaker brings together the fields of mathematics, marine biology, feminine handicrafts, and environmental activism. Seriously!