This is undoubtedly the best TV show I have ever had the good fortune of watching and most probably the most amazing TV show ever made.
From the astonishing and astounding genius of Sherlock to the uncommon commonness and perfection of John, and most importantly, their remarkable, incandescent and unbreakable bond of friendship, which is much more than just friendship, this show has it all. It has the thrill of the chase, the mysteries for all the world to solve and the truth for everyone to see (but only one person can, You Know Who), it can make you laugh and unexpectedly, can make your eyes filled with tears on occasions and it just carries you with its flow and you don't realise when you fell in love with it.
It is not a show with just thrilling moments and acts of brilliance, it has the element of character flaws which both normal and extraordinary people have and how they compliment each other to fight against the demons both outside and inside, and develop an unprecedented bond which is just so worth-loving and awe-inspiring. It has a sort of new-ness in its concept, it has comedy, a touch of drama and lots of emotions (which are in my opinion the standout part of it).
So...just watch it & there's no way you're not gonna love it.