Controlled Experiment - S1-E16
Continuity mistake: When Phobos sets up the time converter, the grid on his large round scope has a diamond-shaped pattern. But when we see it from his point of view, the grid comprises perfect squares instead, and contains numbers that weren't there before. (00:15:00)
Dr. Paul Wayne: So what difference does it make, whether it's 20 minutes or 20 years, since neither amounts to the faintest echo of the tiniest whisper in the thunder of time.
The Forms of Things Unknown - S1-E32
Trivia: Part of Dominic Frontiere's haunting musical score for this episode later became the theme and background music for the TV series The Invaders, a show for which Frontiere served as the primary composer.