Do you have an example, like a video you have seen on none of those video sharing sits, as I am not completely understanding, what you meant with "moves like and iPad coming together"?
If so, then that is nothing iMovie can do. You need a 3D application like Blender or Cinema 4D for that.
If not, please provide link or screenshot of what you actually mean, as I am not looking through 537 videos for that. Sorry, but if you want help, you should provide as much information as you can gather instead of letting the ones that can help you gather it, and therefore have to search for it.