TOD:
I'm not sure what the first fully subtitled movie I saw was. But, it might have been WILD STRAWBERRIES.
I went through an Ingmar Bergman phase when I was in college. In fact, I saw a lot of subtitled films back then.
Finally, I saw LAST YEAR AT MARIENBAD; thought it was the biggest piece of S#%T I had ever seen in my life and I stopped going to foreign films for years.
There are a lot for foreign films that I like, but I hate reading subtitles, so it has to be very special for me to watch it.
And, I do not like dubbed versions.