Star Trek II: The Wrath of Khan (1982) for The Adventure-a-Thon
In 2285, an unaware U.S.S. Reliant stumbles across genetically created superbeing Khan Noonien Singh (Ricardo Montalbán) and his surviving followers, marooned on a hostile planet for 15 years as punishment for terrorizing the U.S.S. Enterprise and its crew. Khan and his subjects were exiled to the conveniently located Ceti Alpha V by Enterprise Captain James T. Kirk (William Shatner), and thanks to typical military bureaucracy, no one thought to check on Khan after he was left on the planet, not even to make sure he was still safely contained and no longer wreaking havoc. The already difficult Ceti Alpha V had been made nearly uninhabitable about six months after Khan had been left there, thanks to Ceti Alpha VI exploding, as both planets and Spinal Tap drummers tend to do.