Ed Wood’s Plan 9 from Outer Space

With its incoherent plot, jaw-droppingly odd dialogue, inept acting, threadbare production design, and special effects so shoddy that they border on the surreal, Plan 9 From Outer Space has often been called the worst movie ever made. But it's an oddly endearing disaster; boasting genuine enthusiasm and undeniable charm, it is the work of people who loved movies and loved making them, even if they displayed little visible talent. - RottenTomatoes.com

Not intended for anyone under 7.