Ten best Star Trek: The Next Generation episodes
"Best of Both Worlds"
This two-parter spanned season three's ending and season four's opening, offering one of the series' best cliffhangers. It also offers up the Borg, Trek's best villains, in their best storyline ever. Picard gets kidnapped, and assimilated, by the Borg, the Borg invade Federation space, and all hell breaks loose. There are few, if any, lines more chilling in TNG history than Borgified Picard declaring, "I am Locutus of Borg. Resistance is futile. Your life, as it has been, is over."