The Swarm (1978)
Not Michael Caine’s finest hour, perhaps – but The Swarm’s all star cast and sheer badness have cemented its status as a cult curio. A disaster movie in which a mass of killer bees is the threat, it’s notable not only for its high camp ("Houston on fire. Will history blame me, or the bees?"), but for the fact that actual bees were used in the production – people were even employed to clip off the stingers to save cast and crew from too much discomfort.