I've found some of the best resources for Flipping the Classroom on YouTube, actually. I find it's easy to search, has videos on almost every topic, and is user friendly for both the teacher and students.
I have used DrKit video channel to have students watch professionals talk about their careers, and then share in class and apply what we have learned to that specific career.
https://www.youtube.com/user/DrKitVideos
I've also used some demonstrational videos for skills labs. Such as this one on brushing teeth:
https://www.youtube.com/watch?v=L29xEct6BCs
