Most Helpful Guy
I think the best TV show that I've seen would be Breaking Bad.
It had a perfect blend of drama/action, and the plot was fantastic. The idea was unique and I loved the character development of Walt and Jesse. It made me get emotionally invested in it. I hated Skyler, felt bad Jesse, and had mixed reactions with Walt. The ending (I won't spoil haha) was great and epic. Many shows like Lost or Dexter are great and unique but have endings or seasons that are kind of ehh. I felt Breaking Bad was fantastic throughout.