Battlefield Earth: A Saga of the Year 3000 was the first and likely last big-screen adaptation of a novel by L. Ron Hubbard, the wildly prolific sci-fi author best known as the founder of Scientology.

He gets trapped in there, and it's like a horror film. It's an amazing sequence. "'Battlefield Earth' played for six months on HBO. They actually offered about $60 million to Travolta to do a sequel.

Entertainment Space Movies & Shows 'Battlefield Earth' is Hollywood's most infamous sci-fi flick, but 25 years on, director Roger Christian remains proud of his work with Travolta (exclusive) ...