Open educational resources are free to copy, use, adapt, and re-share. There are other materials that are freely accessible to you and your students that may be suitable for your classes including library databases and internet tools.
Streaming Video From the Library
Academic Video Online: Premium
A multidisciplinary collection of videos that support a wide variety of subjects.
Nursing Education in Video
Supports the education and training of nurses, nursing assistants, and other healthcare workers
Streaming Video on the Internet
Nonprofit dedicated to spreading ideas about Technology, Entertainment, and Design.
PBS has some of it's content available for free.