Wow! Another home run for MARVEL.
It is a genesis story (of course), as we have not met Dr. Strange before. Still, it was a good one, as good as any and better than most.
IMAX was great. 3D was great.
You've probably seen trailers, so telling you about bending and folding space will not be a spoiler. One time, I actually felt it. You know, that dizzy feeling you get on roller upside-down coaster rides, barrel rolls in airplanes (I wish!), twisty motorcycle rides, that kind of thing. I think it is your brain interacting with your inner ear. I actually felt that sensation and caught myself tilting my head to straighten things out.
The bad guy is bad.
The babe is, well, a babe.
The Doctor is Strange. At one point, they came perilously close to a Doctor Who exchange (fans know what I mean) but studiously avoided it.