I used to love that show back in the 70s. If I remember my trivia, it was going to be Bruce Lee in the role but the studio wanted a more established star.
I'm watching a great series at the moment:
The Kominsky Method
It's about an ageing actor who now teaches acting.
Nice gentle comedy and it's the cast that really makes it, with Michael Douglas and Alan Arkin in the main roles.
Who's the cat that won't cop out when there's danger all about?