The Sword in the Stone, Lilo and Stitch, Monster’s Inc., Matilda, The Red Balloon, Big Red, and many others.
Looking at someone else’s list (my memory is like a steel sieve), these are some I think were great:
1. Abbott and Costello Meet Frankenstein (1948)
2. The Adventures of Robin Hood (1938)
3. The African Queen (1951)
5. Babe (1995)
6. Back to the Future (1985)
7. The Bad News Bears (1976)
8. The Bear (1988)
9. Beauty and the Beast (1991)
10. Beetlejuice (1988)
11. Big (1988)
12. The Black Stallion (1979)
14. Breaking Away (1979)
15. Bringing Up Baby (1938)
20. Chariots of Fire (1981)
22. Close Encounters of the Third Kind (1977)
23. The Day the Earth Stood Still (1951)
24. Dick Tracy (1990)
25. Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb (1964)
26. Duck Soup (1933)
27. Edward Scissorhands (1990)
29. E.T.: The Extra-Terrestrial (1982)
30. Fiddler on the Roof (1971)
31. Field of Dreams (1989)
32. Fly Away Home (1996)
33. Gandhi (1982)
34. Ghostbusters (1984)
35. The Gold Rush (1925)
36. The Great Escape (1963)
38. Groundhog Day (1993)
39. A Hard Day’s Night (1964)
40. Harry Potter and the Sorcerer’s Stone (2001)
41. High Noon (1952)
43. It Happened One Night (1934)
44. James and the Giant Peach (1996)
45. Jurassic Park (1993)
46. The King and I (1956)
47. King Kong (1933)
48. Lawrence of Arabia (1962)
49. A League of Their Own (1992)
50. Lilo & Stitch (2002)
51. The Lion King (1994)
52. Little Fugitive (1953)
54. The Little Mermaid (1989)
55. A Little Princess (1995)
56. Little Women (1994)
58. The Lord of the Rings: The Fellowship of the Ring (2001)
59. Lost Horizon (1937)
60. The Magnificent Seven (1960)
61. Mary Poppins (1964)
62. Monsters, Inc. (2001)
63. Mr. Smith Goes to Washington (1939)
64. Mrs. Doubtfire (1993)
65. The Music Man (1962)
66. My Fair Lady (1964)
67. National Velvet (1944)
68. Never Cry Wolf (1983)
69. North by Northwest (1959)
70. Peter Pan (1953)
71. Pinocchio (1940)
72. The Princess Bride (1987)
73. Raiders of the Lost Ark (1981)
74. Rear Window (1954)
76. The Rookie (2002)
77. The Secret Garden (1993)
78. The Secret of Roan Inish (1994)
79. Shane (1953)
80. Shrek (2001)
81. Singin’ in the Rain (1952)
82. Snow White and the Seven Dwarfs (1937)
84. The Sound of Music (1965)
86. Star Wars (1977)
87. Steamboat Bill, Jr. (1928)
88. Sullivan’s Travels (1941)
89. Superman (1978)
90. Swiss Family Robinson (1960)
91. The Three Musketeers and The Four Musketeers (1974 and 1975)
92. To Kill a Mockingbird (1962)
93. Toy Story and Toy Story 2 (1995 and 1999)
94. 20,000 Leagues Under the Sea (1954)
95. Walkabout (1971)
96. West Side Story (1961)
97. Who Framed Roger Rabbit? (1988)
99. The Wizard of Oz (1939)
100. Yellow Submarine (1968)
Some of these may not have been made specifically for children but are valuable films for children to watch with a parent or a teacher who can then discuss the meaning of the film. And some are just plain fun at any age.