I still think some hot topics haven't been discussed better on any scifi show than TNG did it.
I even still recognize new scifi series copying parts of TNG. It was one of the best and most intelligent shows.
And if tyrants take me, And throw me in prison, My thoughts will burst free, Like blossoms in season.
Foundations will crumble, The structure will tumble, And free men will cry:
Thoughts are free!