A mysterious potion switches the personalities of a buttoned-up doctor and his laid-back son.
 
FUN FACT:  Star Dudley Moore was immediately smitten with Like Father Like Son (1987). Moore said: "The idea of swapping bodies appealed to me, and it was a good excuse to be a kid again . . . although I don't need an excuse. It was just a fun story. I had been sixteen years old once, and I don't pretend to be a professional adult. I really didn't play a sixteen year old. I think that would have been mildly boring. So, instead of going for accuracy, we went for the fun of the situation. I was playing an attitude, not an age".