My favorite finale is Star Trek: The Next Generation. It revisited the pilot, explored a what-if future, and then fixed the present. The last scene, Picard joins the rest of the main crew in their poker game for the first time. I still get goosebumps thinking about him dealing the cards and saying “Five card stud, nothing wild, and the sky’s the limit.” And then the camera spirals out to space and the crew continues on their adventures, just without us.

It would be the “Sam and Dean drive off into the sunset together” ending.