I thought it was some schmaltzy Disney tale of a cute little Hawiian girl and her pet mouse! It actually turns out to be one of the funniest, most entertaining, original animated movies since Toy Story....
I'd hate to give the plot away so I'll just say that it involves the story of the relationship between an alien who has been genetically engineered to be the most evil creature in the universe and consequently banished to earth by the Intergalactic Federation, and a 'problem' child with a penchant for Elvis Presley, who's about to be taken into care by social services, represented by an ex-gangsta called Bubbles! - Disney? NOT!!
There IS a strong moral overtone here, delivering the importance of the concept of 'family' (in the broadest sense tho', which I applaud) and it can verge on the sentimental for my taste (but hey, this is Disney); but the script, the gags, the characters, the comic timing and the animation are staggering. I laughed til I cried many times ... the script is by far the most adult I've heard in any of the recent animated movies which have aimed to give something to the grown-ups too - in fact I reckon most of the gags will go way over the head of your average kid, this film is every bit an adult comedy.
This really is a 'must own' DVD. An absolute classic.