re: #106 Wendell Zurkowitz ((slave to the waffle light))
Interpretive dance had not caught on outside ballet.
Well, Modern dance had been around since the beginning of that century.
Now, those teenagers in 1964 probably had very little exposure to any sort of dancing, though some of the girls may have had ballet when they were little.
Still, 60 years on and as a culture our dancing is much better. Yes, it is because of TV.
Probably also less sexual inhibition.