In which 1968 horror film do seven people barricade themselves in a farmhouse to fight off flesh-eaters?

Which 1967 prison film includes the line "What we've got here is failure to communicate"? In 1967 Hasbro released a female G.I. Joe figure, now worth thousands in mint condition. She wasn't a warrior; what was… Who was Time magazine's Man of the Year for 1967? Who recorded "(Sittin' On) The Dock of the Bay", a No. 1 hit in 1968? Which 1968 animated Beatles film includes "All You Need Is Love" and a voyage through the Sea of Monsters? Who ran for U.S. president in 1968 as the candidate of the American Independent Party? In which 1968 film does Peter O'Toole, as Henry II, deliberate over which of his sons should succeed him? Astronauts Frank Poole and Dave Bowman and scientist Heywood Floyd are characters in which 1968 film?