The iPad is so magical it even does 3D now. Sorta. Aircord Labs have released a video showing an iPad that outputs 3D images visible to naked eye thanks to a specially designed projector that beams images into a pyramid-like screen thing.
Take a look at the video below. It looks like those images are real, floating in real space and answering to human's feedback like clapping hands. I don't know if we'll ever see an iPad doing this stuff by default or if this technology will actually turn out to be any useful in real life (maybe), but just the fact that it's possible sounds great to me. I mean, think about tweeting in 3D. Or arranging icons. Or moving notes around.
You get the idea.