Yes, YouTube has a special "edu" section where colleges and universities from across the country post videos? You can find video posts from musical and dance performances to brief lectures from noted scholars to commencement addresses and interviews with students.
Besides being entertaining, there is useful information and resources that could help with school projects and even business projects.
For example, visit YouTube EDU and learn from a video possted by Harvard Business School.
Maybe you are looking for inspiration for a project in an art or design class.
There are also videos from students sharing their ideas and projects that could help you brainstorm your projects.
Preparing a speech? There are some good examples (and bad examples) of public speaking. Listen to recent commencement speakers, like Michelle Obama at the University of California, or Brad Delson (of Linkin Park) at UCLA, at practice critiquing them.