My favorite aspect of this photo is the depth of planes and angles. It confuses the eye as to which plane is which, creating an optical illusion. Plus the face that you can see the glass' reflection, but not the glass itself.
This is an interesting photo because of the shadows, and the fact that the shadow seems to swallow up the bird in the left corner. This was actually right before 'lift off', so any sooner or later would of ruined the effect. Hope you like!