My time has come!
The above stereographic image is for cross-eyed viewing (most stereograms are wall-eyed, so you may need to put your finger in front of your screen until this one comes into focus)
This is an image of Honolulu, Hawaii, published by NASA. Note Diamond Head (the volcanic crater) in the south.
Here are some other stereopairs published by JPL:
Wheeler Ridge, California
Mount Saint Helens
Salt Lake Valley, Utah
Wellington, New Zealand
I agree with the general sentiment, though I believe that the value of these images from the perspective of scientific appreciation outweighs traditional Magic Eye images. I remember, ten years later on, how my professor for the geology intro course let us see images taken over Germany by British intelligence, and you could literally see how they used the stereography to find missiles, because you'd be looking at a bunch of flat terrain and then bam, there's a weird thing poking up out of the ground near that farmhouse. Then, she showed us some of these, and showed us how you could compare the topography in these to those on the topo maps. From a "wow" factor, not everything is going to be as flashy as a Royal Institution Christmas lecture, but this is what science looks like.
ETA: Wait, what do you mean "out-of-focus"?
At my work, we maintain computers for a bio lab that use Nvidia glasses to view stereo images of cryogenically frozen protein structures.
Nvidia doesn't support them anymore, and there was an email thread that was forwarded to us by the lab manager of some scientists discussing the issue. One of them suggested to the others that they could just cross their eyes and see the images that way instead of using the glasses. Funny stuff!