Computer Chronicles and MotorWeek were fixtures of my Saturday afternoons as a young kid in the 80s. 35+ years later both shows became fascinating and priceless time capsules of the era.
For me it was those two, but also Bob Ross (of course!) and Star Gazers (Keep looking up!). I enjoyed drawing and astronomy and the entire reason I got into computers was to program the equations from the astronomy with your pocket calculator book.