Which tv series had the best final episode?

1. Black adder the final scene when they go over the top in WW1. so wonderfully shot and so poignant. It shows the whole stupidity of war yet it still goes on.
   — komfortablynumb


2. The Wire. The shit just goes on and on and on long after we’re gone.
   — BurnerPerkins


3. *Buffy*. The gang has two hours to kill before the Hellmouth opens to release all the demons of the underworld, bringing about the end of mankind and their own inevitable and gory deaths. They spend it playing Dungeons and Dragons. And Spike - the ~~world's only~~ vampire-with-a-soul - sacrifices himself to save them all.
   — theartfulcodger