Breaking Bad, season 5 episode 16, Felina.
What to say about this that does not include detail of the episode ?
Happy at how the disparate story threads were resolved.
Happy at how the characters' fates have been mapped out.
Somewhat happy that I don't have to sit down for another episode with that fear over what might unfold. Episodes 13 (To'hajiilee) and 14 (Ozymandias) were, in a sense, the series finale. The last 2 episodes were about tidying up in the aftermath and 'chickens coming home to roost'.
It is easy to assume that there will never be a series like that again. The other contenders for 'BEST TV SERIES .. EVER !!!' each had their flaws when it came to closing off the story. The Sopranos ending needs no further discussion here. The last season of The Wire was probably the weakest of the five, the newspaper thread never engaged like the others (the Towers, The Greek and the Dockers, Hamsterdam, School system). The Shield is said to have closed off satisfactorily, but I never got into that and, at this stage, doubt that I could ever commit to 88 episodes. Deadwood was cancelled too soon.
While under the influence of the afterglow of the finale, I currently believe Breaking Bad to be top of the pile.