I think 'Dark Frontier' had great battle sequences. From the opening fight with the scout ship, to the rest of it ... it was good. I also liked...
None of the listed choices would be my personal choices for respective seasons' best (and I'm surprised it's not Dead Stop or something instead of...
TOS - The Trouble With Tribbles TNG - The Best of Both Worlds DS9 - The Visitor VOY - Timeless ENT - Azati Prime/Damage
I think time travel/alternate universes can make (and have made) for Trek's very best episodes when they're done right: The City on the Edge of...
I voted for Season Five. I'm rather surprised more people haven't. I thought it contained some of the very best episodes, Drone and Timeless being...
Separate names with a comma.