Like others have mentioned, it's the original Battlestar Galactica. As a product of the late 1970's, its production was steeped in the aesthetics of the time. It sits in this pocket near the end of the disco era, and dared to stand out by featuring episodic sci-fi when mainstream television was dominated by variety shows (e.g. Sonny and Cher, He-Haw). Serious, campy, scmhaltzy, fun, sometimes great, sometimes awful, and apparently too expensive to avoid cancellation, it stands on its own two feet as its own phenomenon while inviting endless comparisons to classic Trek.