Ethan Embry had to temporarily bow out of filming for a few episodes, due to a sports injury. His character (Frank Smith) was said to be away caring for his ailing father.
Ed O'Neill and Ethan Embry first starred together in the film Dutch (1991) when Embry was only 13 years old.
The original Dragnet theme, titled "Danger Ahead", actually predated Dragnet. It is the score of The Killers (1946).
After the show was cancelled by ABC in 2003, three of the remaining five unaired episodes premiered on USA Network in 2004.
In the pilot episode for the series Married With Children, starring Ed O'Neill as Al Bundy the theme song from Dragnet is heard 'honked' by Kelly Bundy's boyfriends van.