if we talk about series, the best one is Breaking Bad, and there is no doubt about it.
1. Breaking Bad
2. The Sopranos
3. Sons of Anarchy
4. Narcos
5. Sherlock
6. True Detective
Worth to watch are also: Game of Throne, Walking Dead, Dexter, Blacklist, The X Files, House of cards, Glina, Wataha (last 2 are polish but very good one, maybe u can find it with subtitles, it will not be waste of time - I promise) many others..