Those little snippets after the end of a movie - the post-credit or mid-credit scenes - have become quite a thing in superhero movies, to the point where some folks are disappointed if one does not show up.
Some of them are just a cute bit of fan service (like the "shwarma-eating scene" at the end of The Avengers), but they can be quite revealing too. Sometimes they even refer to other forthcoming movies - little teasers, in effect.
|Just some superheros eatin' schwarma...|
The upcoming Dr Strange apparently has a couple of very spoiler-y doozies at the end of that movie. I am certainly not going to spill the goods here, but if you click on over to GamesRadar, you can find out for yourself, if you are so inclined.