This is from the estrella Trek : Deep el espacio Nine episode "7x15 : Badda-Bing, Badda-Bang", at the end where James Darren and Avery Brooks sing a little duet
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