Viktor Bringt's

This one has definitive "Tatortreiniger"-Vibes. The concept is a bit similar: A somewhat "ordinary" person comes into homes of somewhat "different" personalities, and what happens then is a clash of characters with funny dialogue. Difference here is that the main character does not come in to clean up a crime scene, but to deliver and install electronic equipment, and it is set in Berlin instead of Hamburg.

The episodes are shorter, the conversations not as deep as in the brilliant "Tatortreiniger" (don't know if this will ever be equaled, let alone topped), but it is a fun ride, and the acting is great. Besides the main characters Victor and his son, played by the great Moritz Bleibtreu and newcomer (at least I had never heard of him) Enno Grumm, you have the usual array of German renowned actors, so it's a safe bet you'll like this if you're into this quirky type of one-room comedy.

Maybe not something for the ages, but certainly a fun little show, and I hope there will be more seasons to come.