Remember the kill cams that first showed up in New Vegas?
Every time you killed the last enemy in an area it would go into a dramatic kill cam cinematic.
It also happened if you instantly did a one hit kill on someone in a calm pacified area, like this:
https://www.youtube.com/watch?v=NYSjLXIEL9E
These kill cams were later put into Elder Scrolls V: Skyrim. I am really gutted they did not make it into Fallout 4.
Though I do remember, Skyrim did not originally have kill cams for magic and bow and arrow weapons. These were put in at a later date through game updates.
I really REALLY hope they are able to put these cinematic's into Fallout 4 over future updates. They were awesome.