Video game endings. They are supposed to be your reward for all of your hard work and dedication. Some games, Eye of the Beholder for example, give you an ending that's essentially a middle finger. Then there are some games that cause your jaw to drop with how wickedly awesome your experience becomes when you witness an ending that more than compensates you for your dedication.
The absolute greatest video game ending that I've ever seen was granted to me for completing an obscure DOS game called "Moonstone: A Hard Day's Knight".
This game was very tedious and had a huge learning curve. You play as a knight who has to travel around a large map in an effort to find the Moonstone and return it to a sacred grove (Stonehenge).
The controls are stubborn as all hell. You can level up and have more hit points and do more damage, but you'll only start doing well when you learn how to cope with the clunky controls. A dragon will randomly fly across the map, and if he attacks you the battle is insanely difficult to win. Die, and you lose your accumulated items and wealth.
I remember losing my mind at how difficult this game was, but eventually I learned how to wreck every potential enemy (to include the dragon) and finessed it the first time I ever actually beat it.
The ending... blew... my... fucking... mind. Have a look:
https://www.youtube.com/watch?v=KqCUqYpqldU
You become A FUCKING CONSTELLATION!
I literally screamed "HOLY SHIT!" when I saw it for the first time, and it took a few weeks for it to fully sink in. The stars in the sky have existed since before our time and will exist long after we're gone. Essentially; you become a God. The absolute greatest ending I've ever seen.