I absolutely loved Black Mirror - unique, dark, and thought provoking...I loved it because it hits you right in the face with topics that people may be generally uncomfortable thinking/talking about. I initially wrote a huge block of text gushing about it, but honestly the show is so remarkable that it speaks for itself.
A note: If you are the type of person to judge a show based on its first episode (sometimes I do this), you may want to start with season 1 episode 2, instead of season 1 episode 1 because I feel like the first episode does not "suck you in" as much as the others. I know a few other people who have the same advice, but keep in mind this is just my opinion.
Overall - highly recommended!
edit:
@bingeonvogue what was your favorite episode?