Loved this film. I liked cumberbach in his Alan Turing role in The Imitation Game and this was equally great.
The film wasn't overly Marvel in its delivery although Stan got his guest role on the bus. It had elements of the unreal and reminded me of films like Inception with the bending of realities, or the beautiful images of Ecsher's repeating stairs and patterns.
I was absorbed from start to finish and I imagine it would be even better seen in 3d.