My definition of a Borg episode is an episode in which one or more Borg drones appear or a functional Borg ship is encountered. Things get complicated once Seven Of Nine joins Voyager because, essentially, every episode becomes a Borg episode. To solve this problem, I don't count her has a Borg drone appearance.

Show Stardate Title
2153/03/01 Regeneration
42761.3 Q Who
43989.1 The Best of Both Worlds, Part I
44001.4 The Best of Both Worlds, Part II
45854.2 I, Borg
46982.1 Descent, Part I
47025.4 Descent, Part II
50614.2 Unity
50893.5 Star Trek VIII: First Contact
50984.3 Scorpion, Part I
51003.7 Scorpion, Part II
5122?.? The Raven
5210?.? Drone
5258?.? Dark Frontier, Part I
5259?.? Dark Frontier, Part II
53049.2 Survival Instinct
5362?.? Collective
5372?.? Child's Play
5399?.? Unimatrix Zero, Part I
54014.4 Unimatrix Zero, Part II
54129.4 Imperfection
54973.4 Endgame

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