Very Funny Movie
Putting the originality, or the quality of the story itself aside, I have to say I find some elements of this movie very funny.
The combination of interesting (eccentric) characters and their interactions results in some extremely funny moments. Comparing it to other Disney movies, I would say it's funnier than most.
Milo: "It must have taken hundreds.. no, thousands of years to carve this thing"
Vinny: "Hey look, I made a bridge. It only took me like, what, ten seconds. Eleven tops."
The Mole: "The magma has solidified in the bowels of the volcano, effectively blocking the exit"
Mrs. Packard: "I've got the same problem with sour *beep*