My favorite trailers for this week share a common theme: parasitic aliens. The trope has given us some of the finest moments in cinema history; consider the whole Alien franchise, the horrifying dog transformation in The Thing, or that scene from Spaceballs. You could make a convincing argument that Star Trek’s Borg race are parasites of a kind, too.
It’s a versatile premise that lets a movie be as heady or grotesque or action-packed as its creators want. And two of sci-fi’s most beloved fictional freeloaders are showing up this week.