Battlestar Galactica

Richard Hatch, who plays Tom Zarek, played Apollo in the original Galáctica, estrella de combate (1978). He appeared in all 21 episodes of the original series, and in 22 episodes of the new series.

Jane Seymour was offered the role of Admiral Helena Cain. When she turned down the offer, Ronald D. Moore offered the role to Michelle Forbes and she accepted.

The series originally used names from Greek and Norse mythology. Later on, this was expanded to include other mythologies, including Roman.