Ah, the eternal 1 eps or 2 debate. The original broadcast was counted as 1 episode (telemovie), meaning 1 title, 1 set of end credits, and its counted as 1 'thing' for the purposes of ratings, but when it comes to episode counts, the trend has been towards counting episodes in the base units of the standard episode length (i.e. 1 hour) except in such instances where it changes for a whole season (i.e Twilight Zone for Season 4. The series went from 30 min to 60 min back to 30 min. Season 4 has 18 hour long eps and they are just counted as 18 eps). So, despite having 5 telemovies (Caretaker, Killing Game, Dark Frontier, Flesh & Blood, Endgame), Voyager is considered to have 172 episodes, not 167 eps. Likewise DS9 176 eps, TNG 178 eps.