I love Eurotrip. To those of you that think the Princess Bride is a comedy, then that's right up there too.
If I thought hard enough, I could probably come up with one that's funnier, but "Dumb and Dumber" is a classic, and seems to never get old!
i like Aladdin-a street urchin, accidentally meets Princess Jasmine, who is in the city undercover. They love each other, but she can only marry a prince.