Mars Attacks! (1996)

This hilarious comedy about aliens who arrive on Earth and wreak havoc is filled with quirky characters and plenty of action. The film, with a distinctly satirical tone, tells the story of a group of humans who must band together to defeat an invading army of Martians bent on destroying planet Earth. While you don't have to be a big sci-fi fan to enjoy it, the film is somewhat of an homage (with a parodic tone) to the B-movies of the '50s.