I saw this again recently - commemorating 25 years since it's original release, and to this day I still remember the image of the little aliens with the duty-free trolley of cigarettes trying to flee Earth after we are threatened with destruction by the "Arquillian" empire with powerful weapons - who want their "galaxy" back. It falls to "K" (Tommy Lee Jones) and his streetwise, rookie colleague "J" (Will Smith) to identify then try to track down this article - and the evil beast that killed their Emperor who was carrying it - before the Imperium takes it's, literally, Earth-shattering action. There is a great dynamic between the two stars, plenty of humour to compliment the fun special effects and as we discover, loads of characters amongst the alien creatures who have been inhabiting this planet since God was a boy. The ending goes on bit, but it has stood the test of time well, and is still easily the best of this franchise.