The first episode of ghost adventures, season 1, was something I'll never forget
A lot on here may be too young to remember but I will never forget the last episode of the show M.A.S.H in 1983. The show lasted 11 seasons and it ended with the ceasefire and subsequent end of the Korean War, with everyone going their own separate ways after trying to stay sane in an insane place.
It will always have a special place in my heart. I felt like I knew each character personally. They do not make shows like this anymore, at least in my opinion.
The last episode of Blackadder Goes Forth. This was a comedy series. If you get a chance, youtube it
If you can see the whole episode so much the better, but if not...
Mine is Holy Grail.
The tv show Monk. The one episode I'll never forget is when the elephant crushes a mans head with its foot.
Arrow season 1 Episode 23