My fave forgotten movie that hasn't been mentioned yet is:-
Fried Green Tonatoes at the Whistle Stop Café
Love this film to death especially the scene in the car park where Kathy Bates bashes into the young girls car that has just nicked the space she was waiting for, and she retorts something like 'Lets face it girls, I'm older and I have more insurance!' - absolutely brilliant film but normally I get blank looks when I mention it...
Amongst my others would have been, The Last Unicorn, Legend, The Dark Crystal, Willow, Labyrinth, Big Trouble in Little China, Near Dark, The Goonies, Strictly Ballroom, Salem's Lot, The Color Purple, Children of the Corn, Project X, Ferris Buellers Day Off, Grumpy Old Men, The Never Ending Story, and there are probably loads more if I really sat and thought about it.