Hal Douglas Dead -- Movie Trailer Voice Legend Dies at 89

In a world ... where one man ... voices THOUSANDS of the world's most recognizable movie trailers -- it's really really sad when that guy passes away.

Hal Douglas -- the gravelly voice behind trailers for movies like "Philadelphia," "Forrest Gump," "Meet the Parents," "Lethal Weapon," and way way more -- died Friday due to complications from pancreatic cancer ... his daughter said.

Douglas passed away at his home in Lovettsville, Va. He was 89.

In addition to his daughter, Douglas is survived by his wife Ruth and and two sons from a previous marriage.