Originally Posted by Dayvan Cowboy

well, they found these monoliths in space that originally gave monkeys the ability to use tools when they touched it, and they want this guy to get the monolith out by jupiter, but some HAL 9000 computer makes an error along the way, and they want to dismantle the HAL 9000 computer, and he eventually does, and then at the end weird **** happens.

It's hard to explain, but it's amazing. I couldn't believe that it was made in 1968. I wasn't expecting the movie to have special effects that good.