A long list of experiences. Funny thing is, Movies depict most of the stuff wrong, except green goo.
In Dec 94 , i was in lahore, pasting some posters in Neelum Block, Allama Iqbal Town with Now famous Anchor Salman Haider. It was around 3 AM (Poster pastings are done in night).
Both of us were working separate, when i came across a concrete dustbin. I felt some chill and sounds of "GHONGROS", first i though it was some cat or rats in dustbin, but when i heard it again, i got scared and traced my way back to Salman, who was working on the opposite side. I told him about the sound, and he made fun of me. anyway, i was scared and refused to work alone, so we started to work together, pasting those damn posters. after few minutes, i heard that sound again , this time Salman acknowledged it too. He asked me to recite Surah Naas (which i forgot due to fear) aloud and started to recite it himself. The sound became louder and closer by every passing second. The loudest sound felt like that someone was standing directly infront of us. then it was gone.
We both went back home, and got sick for a week. His fever was so high, that he was kept in icu for 3 days.
My spine is chilling , hairs on my back are straight as of writing. :)