Um.... Hard question. I suppose Home Alone, The Spongebob Squarepants Movie (I've watched it about a million times) and Night at the Museum. The next movie I shall watch is..... The Simpsons Movie.
Spirited Away (Studio Ghibli) is probably one of my favorite animated films ... I thought the film version of "Narnia - The Lion, The Witch and The Wardrobe" was excellent too ...
as for "real life" films, I think Forrest Gump is my fave ("... life is like a box of chocolates, you never know which type you're gonna get.."
My favorite movie is Monsters Inc. for some reason! I was sarting to cry at the ending when Boo was in her room. She is just soo cute! She looks like my sister!