In those days, the A/V gig was the one everyone wanted. You'd get good learning the workings of those Slide and 16mm Projectors, and making Transparencies for the Overhead viewer!
I think we're all aware of just how much spewing lava, stinky horse apples and absolute gunk is being put on YouTube these days. However, there are some great Documentaries to be had there, especially those posted by NASA, their Global partners or the Smithsonian NASM. Whether it's listening to an old video of Bob Hoover and Chuck Yeager telling tall tales, the Crew of Apollo 8 recalling their Mission forty years after the fact, or my man Oleg extolling the virtues of a hearty Breakfast before an EVA on the ISS ( vid in previous Post), there's some interesting, informative and educational stuff out there. Even those old Films they used to show (some) of us in School from the 50's - 70's!