Necessities

This is really personal preference, but I would include these:

The Wizard of Oz (1939)
E.T The Extra Terrestrial (1982)
Edward Scissorhands (1990)
Ghost (1990)
Interview with the Vampire (1994)
Jumanji (1995)
Matilda (1996)
The Craft (1996)
Pleasantville (1998)
The Green Mile (1999)
The Mummy (1999)
LotR: The Fellowship of the Rings (2001)
Underworld (2003)
Hellboy (2004)
The Chronicle of Narnia: The Lion, the Witch and the Wardrobe (2005)

I picked movies that I feel are a good sampling of the kind of fantasy that has existed over time and kind of shows the potential of what is meant by fantasy. I left out superhero movies - there are so many. And some of these are not pure 'fantasy' so I'm not sure if they even belong here. Is ET okay or is it strictly SF? Is Underworld horror/action? Idk you decide.