That intro theme has been popping up in my head for 'decades' now. I used to watch these as a kid. One of our teachers showed us this during class in primary school, and after that I started to watch it whenever I could catch it at home. This is the first time I'm watching it since the early to mid 80's.
Watching this on my mobile. I remember a time without mobile phones. Times have changed. Remember watching this at school. Interesting look into people's lives during the 20th Century.