Red Dwarf - Series VII (1997)

When Red Dwarf's generator and backup go down in the middle of the night, the crew has to crawl through the mile-long labyrinth of service ducts to restart it's engines. On their journey, they discover a few surprising things about one another -- including what Lister once did on top of a crate of canned asparagus. Meanwhile, when two realities converge, the Dwarfers undergo their most terrifying ordeal yet -- they bump into a real, live human woman who's attractive and nice.