Attack of the Giant Leeches / Night of the Blood Beast

It's a nightmare of creeping, crawling horror from the depths of outer space and the murk of the swamp in these two drive-in cult classics from Roger Corman, the legendary producer-director who revolutionized independent Hollywood filmmaking. Not to be outdone in the gross factor is 1958's "Night of the Blood Beast". When a rocket carrying astronaut John Corcoran crash lands in a remote wilderness, a small team of scientists rush to the scene, only to find Corcoran dead. Yet his corpse is covered with strange marks and refuses to decompose. Cut off from help, the team soon makes a horrific discovery: not only is Corcoran still alive, but his body is being used as a breeding ground by a horrifying extraterrestrial monster!