It is tough to narrow it down to 5 and it's impossibly for me to give my VERY favourite, but here goes (sort of):
1. (tie) Lord of the Rings Trilogy (all three-it's really one film, just like the books are really just one story)
1. (tie) The Royal Tenenbaums and anything by Wes Anderson. This is not so family friendly (unfortunately) but I absolutely love the humor, wit, and subtlety in his films.
1. (tie) Star Wars - original 3 only.
4. Braveheart
5. The Lion the Witch and the Wardrobe (and the rest of them hopefully!)