The Outer Limits

S02:E15 - The Brain of Colonel Barham

A robot probe is being readied to explore the secrets of the red planet, Mars. The only component lacking: a human brain. No body. Just the brain. It is needed to deal with unexpected crises in the cold, dark depths of space. The perfect volunteer is found in Colonel Barham, a brilliant but hot-tempered astronaut dying of leukemia. But all goes awry as, stripped of his mortal flesh, Barham -- or rather his disembodied brain -- is consumed with a newly-found power to control...or destroy.