What Is DS9?
DS9 refers to the Star Trek spin off series, Star Trek: Deep Space Nine.
What order should i watch Star Trek episodes in. meaning TNG DS9 and VOY so i get the full effect of the crossovers without any spoilers?
In order of Storyline: Star Trek: ENT Star Trek: TOS Star Trek: TNG Star Trek: DS9 Star Trek: VOY (Overlap between DS9 and VOY). In order of air date. Star Trek: TOS Star Trek: TNG Star Trek: DS9 Star Trek: VOY (Once again there is an overlap of about 5 years of plot, but they don't spoil for the other). Star Trek: ENT Hope this helps.
Michael Dorn's roles in Star Trek are, Worf (main character in Star Trek: The Next Generation), Colonel Worf (Worf's grandfather, seen in Star Trek: The Undiscovered Country), Duchamps (a character in Dr Bashir's Holosuite Program, seen in DS9: Our Man Bashir), Regent Worf (The Mirror Universe counterpart of Worf, seen in DS9: Shattered Mirror/The Emperor's New Cloak), Willie Hawkins (seen in DS9: Far Beyond the Stars). Dorn also appears several times as a Hologram of…