It is agreat performance. The second bananas have fun too. Don Rickles' voice is obviously his own yet it is still perfect for Mr. Potato Head. As the voice of the large, goofy Dinosaur who wishes to be more ferocious, Shawn's pleading tone tells us all we need to know about the character. Yet, like their more noticeable counterparts, each one gives a performance that seems to be the perfect articulation of their character.
Every piece fits perfectly here.
Finally, mention must be made of Randy Newman's score. Yes, one time it does seem a bit out of place, but over all his work is impeccable here. Newman's score is equally adept at underscoring the fanciful elements, as it is the sorrowful ones. This is some of his best work. The animation, though made through a new technique, is crisp and perfect.