Picard is really great. Written by the author Michael Chabon who happens to be a Star Trek Fan. I think it moves back from the JJ Abraham adventures towards steady Star Trek territory. I think there's a really amazing/lovely balance of Picard being aware of his age, and not being an invincible...
The Detectorists is simply amazing. Its just a fantastic programme, and anybody hasn't seen it then it definitely worth watching.
I haven't watched Battlestar Gallactica, it was one of those shows I meant to watch, but slipped through the cracks. 'Best Sci fi series ever' has peaked my interest...