This is a clip from the first episode "The Emissary", where two legends meet: Captain Jean-Luc Picard, commanding officer of the USS Enterprise-D, and Commander Benjamin Sisko, recently assigned to the command of DS9
The Best Moment in 星, 星级 Trek Deep 太空 Nine, which explains how the Romulans joined the Dominion war. I warn you, this is about as far away from 星, 星级 Trek as 你 can get, but it is flawless in execution... From the Episode, 'In the Pale moonlight'