X-Files episode 2x19, Død Kalm with ShadowPred
Some bad guest performances and worse old age makeup, but this ep has amazing atmosphere, a great final monologue from Scully about the end of the world, and an ingenious sequence where she raids the ship for the last non-contaminated water available, coming up with only a snow globe, sardine juice and some lemons.
On to Humbug!