NO Spoilers, but… There are two (count ’em 2) scenes in the credits to Doctor Strange. The first comes early in the credits, and the other comes at the very end of the credits.
People were leaving the theater before the credits got rolling.
I can’t think of a Marvel movie that did NOT have something at the end of the credits.
If you like superhero movies, you will probably like Doctor Strange. I have always liked Stephen Strange, even before the movies got rolling. (That 2nd link is to the trailer… And casting Tilda Swinton as “The Ancient One” was a stroke of brilliance.)