8. The First Duty
Season: 5
Aired: 30 March 1992
Stardate: 45703.9
Questions on the responsibilities of leadership and the ethics of honesty pervade this episode, which also showed a mature side to Wesley Crusher that had been startlingly absent in episodes before, going some way towards redeeming him with fans.
7. Q Who?
Season : 2
Aired: 8 May 1989
Stardate: 42761.3
This episode introduced the Borg to Star Trek, who quickly became the franchise’s most popular and prevalent villains throughout its other spin-offs. Indeed, you could even argue that the seeds of Deep Space Nine as a whole were planted in this instalment, as well as Voyager.
