What I did like was watching documentaries of old music and movies. I guess it started with That's Entertainment!, a 1974 compilation MGM films plust the studio history. My parents took me to the cinema and I liked it very much. It started my hobby for Hollywood history.
And about music, it started with
Heroes of Rock'n'Roll, hosted by Jeff Bridges (1979). It includes a band that would became my favorite 3 years later.
Unfortunately I've not found the entire 2 hours doc video, but there some good segments in YT. I think this is the most complete:
https://youtu.be/iirh65r0FZc?t=4736