To be honest, I don't really like films that much. They're ok. I've probably seen, like, 3 of them in my life. So:
I loved Shrek. A back-to-front fairy tale where the ugly people win and there's a talking donkey. Total win.
2. Toy Story
All my childhood dreams personified. Also total win.
3. The Shawshank Redemption
Because it has allowed me to act like I watch grown-up films from time to time, and it was good, even though it wasn't a cartoon.