Logan's Run
One of the last pre-Star Wars science-fiction extravaganzas (based on a novel by William F. Nolan and George Clayton Johnson) takes the famed '60s maxim about not trusting anyone over thirty one step further. Set in the 23rd century, Logan's Run wakes place in a world of peace and immediate pleasure, where nobody grows old. After the age of 30, people go in for "renewal" -- meaning they are killed (although the government hides this from the population). But in this utopian paradise, some people still want to live past thirty.
