Series creator and executive producer Mike McMahon took a major risk with Star Trek: Lower Decks season 2, taking the franchise in a whole new direction.
Neelix was a recognizable face on Star Trek: Voyager throughout the show's run, but the makeup transformation process was unpleasant for actor Ethan Phillips.
One of the most poignant moments in Battlestar Galactica spawned its signature line -- and the delivery was also completely improvised by Edward James Olmos.
Daleks are just one of the Doctor's greatest archenemies — and it turns out, they were just as challenging to control for the show's production team, too!