Must say I'm much more selective now - won't watch anything violent or harrowing. If dh wants to watch such films, he goes alone. I rarely watch any films on TV, but they've got to be really gripping, or I can guarantee I'll fall asleep on the sofa!
As for The Sound of Music - mentioned by the OP - as I suspect like many on here, I was mid teens when it first came out and was put off (as I thought!) for life, by all the old ladies at the time, saying, 'Oooh, it's lovely - I've seen it 45 times!'
Which, to my teen mind, meant it must be sickly sweet and dire!
Roll on around 10 years, to when dh and I were living in the Abu Dhabi desert with a dd of 3, there was nothing on TV for her, and only the odd, usually poor quality (and usually pirate copy!) video tape.
Someone kindly gave us a copy of The Sound of Music, saying dd might like it. So I thought, 'Well, I suppose I might as well watch it with her.'
When dh came home later I said somewhat sheepishly, 'Actually, it's rather good!'
Dd became quite addicted to it, still loves it, and nearly 40 years later her own little ones (2 and 3) now love it too, and sing along with many of the songs.