Heather O'Rourke memorably announced, "They're here" in this 1982 thriller
When the original 
Tron was released in 1982, its cutting-edge CGI ... TV company used archive 
footage of Heather O'Rourke in Poltergeist to sell they're wares, and .... As Steve (
Craig Nelson) and Diane (JoBeth Williams) awaken, Carol Ann warns, "They're 
here.".