Gonna get some hate for this one, but Far Beyond the Stars. Sure it's message about racism is great but... it's completely out of place in the DS9 story and just felt artificially shoved in there.
A Time to Stand
Rocks and Shoals
Behind the Lines
Favor the Bold
Sacrifice of Angels
The Magnificent Ferengi
One Little Ship
In the Pale Moonlight
A Time to Stand
Rocks and Shoals
Behind the Lines
Favor the Bold
Sacrifice of Angels
The Magnificent Ferengi
One Little Ship
In the Pale Moonlight