Same here, I remember our first TV with colour, the next one had a remote control*! Somewhere 84-85 ish we got a VCR (a Panasonic toploader that I still have) and the first film I (then 10) picked out was Tank. Mind you picking a movie out in the rental place was difficult, 1/3 section was movies and 2/3 section (behind an open door) was the "adult" section. Difficult to not keep looking in that direction * an early eighties Toshiba that actually ran till about five years ago!
For me it was Emmanuelle There was a cinema we could get into - we were 15. The support film was called 'just one more time', or something like that, so technically that would have been my first. But I still have a soft spot for Sylvia Kristel
STARSHIP TROOPERS! Yeah, I know. I think I was only 9 when I watched it. I also watched The Exorcist when it was re-released in 2000, so would have been 11. Those are the two that I can remember but there would have been more. My dad used to rent just about any DVD I wanted when I was younger, which was pretty cool. I don't think I've ever been scared by a film and I put it down to my early exposure to rated films.
Silence of the Lambs when I was about 7, but it didn't traumatize me at all, I loved it. I think it's an unusually sensitive and cerebral horror/thriller with good use of discretion shots, which helped. First film to traumatize me was Blade, watched when I was about 10. To that point I'd never really seen gory violence, and I literally blanched at the opening scene. Talk about being thrown in at the deep end...it quickly became one of my favourite films, though.