If you've seen Doctor Strange chances are you've become a fan of British actor Benedict Cumberbatch, who stars as Doctor Stephen Strange.
Benedict Cumberbatch is 40 years old, but he's only been a "star" in the US for the last 7 years, I think, ever since he began appearing in Sherlock, in 2010 - Sherlock Holmes in a modern day setting.
Just a few years ago he guest-starred as Kahn in Star Trek Into Darkness, and I'm sure that got him a few fans as well.
There's plenty of Benedict Cumberbatch fanfiction out there (or fan fiction as I call!), and here's one that I think is particularly good:
It's called The TeleChronomicon Files: Where it is Always 1895. and is an ongoing feature in the AStudyinBenedictCumberbatch blog.
There's lots of info about Benedict Cumberbatch on the web - his roles in Star Trek, Doctor Strange, Sherlock Holmes, as Stephen Hawking, etc., but A Study in Benedict Cumberbatch consolidates it all in one place.