I'd have to go with the original 1940 Fantasia. Amazing music and unsurpassed animation. Fantasia 2000 was good, but it didn't have that abstract feel to it (although that was probably the reason I fell asleep when I first watched it as a kid).
hmm...I guess Wall-E since I like Sci-Fi's and the level of obesity in that movie seemed honest in my opinion. After that I guess Pirates of the Caribbean series.