Any Trek fan who speaks German or is able to find a subtitled version of it should check out the seven episodes of Raumpatrouille.
It`s a fun sci-fi show much like the Original Trek, roughly from the same time period and it did a great mixture of stand-alones and an arc story. Four episodes deal with an invasion force with an outstanding conclusion while the other three show a robot insurrection, a hostage scenario on a prison planet and a forgotten matriarch earth colony.
Not to be picky but I believe it's "Raumpatrouille Orion" (space patrol or space patrol ship "Orion"). And yeah, it's pretty cool. It's fun to pick out some of the things they used to create the controls on the ship (e.g. an iron or a pencil sharpener

).
One of the things that totally fascinates me is that although the original Trek and RO aired at about the same time, RO was literally lightyears ahead in terms of the roles women were 'allowed' to play. They're not just com officers relaying stuff and wearing REALLY short skirts but actually occupy important positions and make important decisions.