My favorites are:
The Lion King
Shrek
Charlie Brown's Christmas
The Grinch Who Stole Christmas (the cartoon version, not the movie)
The Muppet Movie (I even have the soundtrack)
Cinderella
Toy Story
I must admit, I am definitely waiting for the Hey Arnold and PowerPuff Girl movies to come out. I am a big kid at heart and thank God I have a five year old daughter - now I really have a reason to see these movies