The Omega Man (1971) has Charlton Heston as the last man on earth after germ warfare has decimated the population. But he is not alone and wages a one man war on the mutants who carry the plague. These mutants are lead by a zealot (Anthony Zerbe) who wants a return to the old ways before the advances of technology and see’s Heston as the only obstacle in his path.This is still the best version in my opinion and features a cracking score from Ron Grainer.