The show was an attempt to capitalize on the "camp superhero" craze sparked by the success of the 1966 Batman TV series.
All he needed to do was to take a "power pill" which gave him the strength of a thousand men and enabled him to fly, much like Superman, albeit by furious flapping while wearing the top half of a wingsuit.
Beamish's government employers were Mr. Barton J. Reed and Mr. Harley Trent, and his day-job partner at the service station was Hal Walters.
Alan Young, who had just completed his run as Wilbur Post on Mister Ed, was the original choice to play Stanley H. Beamish, and appeared in the original 1966 unaired version of the pilot, which featured a different supporting cast (Edward Andrews as The Chief, All Checco as Dr. Kramer, Dick Merrifield as Tony Lawrence, Sheilah Wells as Gloria Dickinson, and Jesse White as Mr. Finney).
Terrific was released commercially on DVD by Ufa/DVD in Germany under the title Immer wenn er Pillen nahm (Whenever He Took Pills) on July 17, 2009.